(1) monograph; (2) Literature separated from periodicals; (3) Dissertation; (4) Newspaper articles; (5) Electronic documents.

Requirements for citing documents in papers:

1. After writing the text, leave two blank lines and write the word "reference" in the middle; "Reference" is bold on the 4th, and there is no space between the two words.

2. References only list the documents directly read and mainly referenced by the author in the process of writing the paper, and the listed references should be arranged in the order of references of the paper. References and texts are numbered consecutively.