HINT: Often signed encyclopedia or handbook articles (references sources) are written by experts who have written other texts (books, articles, blog posts, etc.) You can search for those authors in HamCAT or Google to discover some of their other works. Reference sources often also have a Further Reading section or a Bibliography at the end of them, with other sources on your topic, that can be worth exploring.
Chris Baldick. (2015). mythopoeia. In The Oxford Dictionary of Literary Terms (4th ed.). Oxford University Press.
Knowles, E. (Ed.). (2005). The Oxford dictionary of phrase and fable (2nd edition). Oxford University Press.