How are entries within the reference list arranged?

Entries within the reference list in APA format are arranged in alphabetical order by the surname of the first author, followed by the initials of their first name. This organization allows readers to quickly locate sources based on the last names of the authors, which is a fundamental aspect of APA citation style. By prioritizing the surname first, it provides a clear and systematic way to present multiple works by different authors, ensuring that the most accessible identifier—last name—comes first.

The arrangement also helps maintain consistency and helps readers easily navigate lengthy reference lists. Other potential arrangements, such as by title, publisher name, or publication date, would not provide the clarity and accessibility intended by the APA format. Thus, alphabetical organization based on author's surname is the most effective and user-friendly method for structuring the reference list.