Further readings provide references to sources that the author has deemed useful to a reader seeking additional information or context about the research problem. They are items that are not essential to understanding the overall study or were cited as a source the author used or quoted from when writing the paper.
Lester, James D. and James D. Lester, Jr. Writing Research Papers: A Complete Guide. 16th edition. Boston, MA: Pearson, 2021.
A list of further readings helps your professor understand the entire scope of your review of the literature and assess how effectively you made decisions about what to use and cite in your paper and what you found but excluded as part of your analysis. Though it depends on the writing style you are asked to use [e.g., APA, Chicago, MLA, etc.], a list of further readings is generally located at the end of your paper after the endnotes or references but before any appendices. The list should begin under the heading "Further Readings." Items can be arranged alphabetically by the author's last name [most common format], categorized under sub-headings by material type [e.g., books, articles, websites, etc.], or listed by the type of content [e.g., theory, methods, etc.].
If you choose to include a list of further readings or it is required by your professor, keep in mind the following:
To identify possible titles to include in a list of further readings, examine the sources you found while researching your paper, but that you ended up not citing because it did not directly relate to your analysis and interpretation of the literature. Review these items and, playing the role of reader, think about which items would provide additional insight or background information about the research problem if the reader wanted to investigate the topic beyond the sources cited in your paper.
Soles, Derek. The Essentials of Academic Writing. 2nd edition. Boston, MA: Cengage Learning Houghton Mifflin, 2010; "Further Reading" and "Wikipedia Talk: Further Reading." Wikipedia.