Preliminary Reference Book: History and System of Western Sociology (Volume I: Classic Contribution), by Zhou Xiaohong, Shanghai People's Publishing House, 2002; Western Sociological Theory, Song Dynasty, Nanjing University Press, 1997 edition; Western Sociological Theory, edited by Yang and Xie Lizhong, Peking University Publishing House, 2006; Modern Social Investigation Methods, published by Huazhong University of Science and Technology Press in 2005. Re-examination reference book: modern social psychology by Zhou Xiaohong, Shanghai People's Publishing House, 1997 edition; Zhang Hongyan, the author of "Invasion and Substitution —— A New Theory of Urban Social Structure Change", Southeast University Press, 2000; The New Economic Sociology of China: A Study on the Structure of Trading Order. Author: Wang Hejian. Beijing: Central Compilation Press, 1999. All I know is these books. I wonder if they have changed. For reference only.