First, general journals publish comments on paper topics.
General magazines have their own internal paper duplicate checking system. If you copy the books included in the internal duplicate checking system of periodicals and magazines, it will definitely be detected. We can avoid duplication by citing references.
Two, junior college and undergraduate thesis.
Ordinary colleges and universities use pmlc detection system to carry out undergraduate papers, and they can copy them without books. Because the contents of this book are not in the database. How do we know whether we include any book resources? It's hard to know unless we detect them in advance.
Third, postgraduate papers and core journal papers.
These two kinds of papers generally adopt professional paper detection system, which can detect both old papers and the latest papers. Let's not copy books. These two kinds of papers are very strict in duplicate checking, which basically includes most books.