APA (7th ed.) Citation

Higgins, C., & Higgins, R. (2000). Sophocles' Oedipus trilogy. IDG Books Worldwide.

Chicago Style (17th ed.) Citation

Higgins, Charles, and Regina Higgins. Sophocles' Oedipus Trilogy. Foster City, Calif. [u.a.]: IDG Books Worldwide, 2000.

MLA (9th ed.) Citation

Higgins, Charles, and Regina Higgins. Sophocles' Oedipus Trilogy. IDG Books Worldwide, 2000.