1. Direct quotation: When directly quoting other people's opinions, data or other information, the author's name, publication year and page number should be indicated in the quotation, such as (author's name, publication year and page number).
For example, according to Smith's research (20 19), most students have grammatical errors in academic paper writing (page 15).
2. Indirect quotation: When quoting other people's opinions or information, the author's name and publication year should be indicated in the quotation, such as (author's name and publication year).
For example, many studies show that writing academic papers is a challenge for most students (Smith, 20 19).
3. Multiple authors: When there are more than two authors in the cited document, the names of all authors can be indicated in the citation, or only the name of the first author can be indicated, followed by "et al." to indicate other authors. For example:
-Two authors: (Author1&; Author's name 2, year of publication)
-Three or more authors: (author 1 name, etc., year of publication)
It should be noted that the citation requirements of documents in APA format are very strict, and they should be marked according to the prescribed format to avoid format errors or missing references. At the same time, when writing a thesis, we should also pay attention to the quantity and quality of literature citations, choose authoritative and credible literature related to the research topic, and avoid quoting outdated, inaccurate or plagiarized literature as much as possible.