Mathematical Analysis published by Peking University Publishing House was recommended by teacher Wu Shengjian or written by teacher Tan Xiaojiang. The textbook is very good, and the teacher speaks it very well! ! Of course, the original Soviet textbooks Calculus Course and Principles of Mathematical Analysis are also recommended. PS: There are many reference books, among which the book Problems and Methods in Mathematical Analysis by Wu Da Publishing House is very good, and there are many more, so I won't elaborate on them one by one. Advanced Algebra is recommended by Higher Education Press, compiled by the primary array of Geometry and Algebra Teaching and Research Section of Peking University Mathematics Department, or the textbook of Mr. Qiu of Peking University; PS: As a reference book, I strongly recommend the book "A Guide to Advanced Algebra Learning" written by Mr. Qiu, which is absolutely instructive! !