1, according to the author's nationality, classification, time, etc.

2. In the case of multiple works by the same author, the names of the works can be abbreviated and replaced by the initials of Chinese characters.

The number of the new book needs to be distinguished from the number of the original book.

4. The numbers of e-books need to be distinguished.

5. The library also needs to make statistics and management on the borrowing and returning of books.