1. APA citation consists of two parts: in-text citation and reference.
2. In-text citation includes three elements: author's last name, year of publication, and page number. It can be expressed in three forms: quote, paraphrase, and block quotes.
3. Reference includes author's full name, book title in italics, and publication information (city of publication, state abbreviation, publisher).
The article is generally reliable as it provides a comprehensive overview of APA citation format with clear instructions on how to cite sources within the text and at the end of the paper. The article also provides examples for each type of citation to help readers understand better. However, there are some potential biases that should be noted. For example, the article does not mention any other types of citations such as MLA or Chicago style which may be used by different universities or departments. Additionally, while the article provides detailed instructions on how to cite sources within an essay using APA style, it does not provide any advice on how to evaluate sources for credibility or accuracy before citing them in an essay. This could lead to students citing unreliable sources without being aware of their potential bias or inaccuracy.