The main functions of references in this paper are: reflecting the research background, clarifying the research foundation, providing proof basis, distinguishing all achievements and facilitating readers' retrieval. The following are examples of references in international trade papers that I searched and sorted out, hoping to be helpful to your paper writing.

References for international trade papers 1:

Zhang Hengyi, Liu Weidong, Wang Shizhong, Shan Nana, Liang Hongmei. Calculation of balance factor and yield factor in ecological footprint model of "saving hectares" —— A case study of Zhejiang Province [J]. Journal of Natural Resources. 2009 (0 1)

[2] Wang Runping, Rong. Emergy analysis of agricultural eco-economic system in Shanxi Province [J]. Journal of Applied Ecology. 2008 ( 10)

Cai Jiuju, Wang Jianjun, Zhang Qi, Li Guangshuang. Material flow and energy flow in iron and steel enterprises and their influence on CO2 emission [J]. Environmental Science Research .2008 (01)

[4] Liu Zunyi, Yang Cuihong, Zheng Guoguang, Feng Guogang, Song Yunrong, Zhu Kunfu, Pei Jiansuo, Tang Zhipeng. Non-competitive Input-Occupancy-Output Model and Its Application —— From the Perspective of Sino-US Trade Surplus [J]. China Social Sciences .2007 (05)

[5] Liu Jianxing, Wang Qing, Chu Daozhong, Gu, and Liang Guiyan. Input-output Analysis of Ecological Footprints of Three Major Industries in China [J]. Ecological Environment .2007 (02)

[6] Bi Xiushui. Research on the Effective Economic Growth of China —— Economic Analysis Based on Kuznets Curve of Natural Capital [J]. Journal of Northeast Normal University. 2005 (03)

[7] Chen, Yuan Yijun. Research on the Sustainable Conditions of Economic Growth Based on Natural Capital [J]. Contemporary Economic Science. 2003 (04)

, Zhang Zhiqiang, Cheng, Chen Dongjing. Calculation of ecological footprint and analysis of development capacity in China [J]. Journal of Applied Ecology. 2003 (02)

[9] Rachel, Yao Jianjian. On natural capital [J]. Southeast University.2002 (01)

[10] Li Gang. Analysis of National Material Flow Based on Sustainable Development [J]. China Industrial Economy .2004 (11)

Liu Yuhui, Peng Xizhe. Evaluation of sustainable development in China based on ecological footprint model [J]. Population, resources and environment in China .2004 (05)

[12] Huang Jiuli, Li. Export Opening, Regional Market Size and Economic Growth [J]. Economic Research .2006 (06)

Yang, Wen Xianming. Origin, Significance and Problems of Natural Capital [J]. Seeking .2006 (04)

[14] Cao, thanks. China ecological footprint model based on input-output analysis [J]. Journal of Ecology. 2007 (04)

Lin Ya, Sun Wenying. Deepening the concept of natural capital and developing circular economy [J]. Journal of China Renmin University. 2008 (05)

International Trade Papers References 2:

[1],,, Zhang Currency Crisis Theory and Exchange Rate Theory: Divergence and Blending [J]. Guide to Economic Research.2013 (05)

[2] Tang Bin. The context and extension of capital theory [D]. Fudan university 20 13

[3] Yang Hong. Research on the development of China's elderly consumption market from the perspective of Marxist consumption theory [D]. Dalian Maritime University 20 1 1

[4] Liang Yin. Research on Building Harmonious Labor Relations in Private Enterprises [D]. Northeast Normal University 20 1 1

[5] Sophir Hwang. On the relationship between man and nature: from Marx to the present [D]. Fujian Normal University 20 1 1

[6] Li. Thoughts on further promoting the reform of RMB exchange rate formation mechanism [J]. Academic Research.2013 (01)

[7] Huang Zhu. Path analysis of RMB exchange rate reform [J]. Modern commerce and trade .2012 (22)

[8] Chen, Hou Jie. The latest development of exchange rate determination theory: literature review [J]. Contemporary economic science. 2005 (05)

;