APA (7th ed.) Citation

Sierra, K., & Bates, B. (2005). Head first Java (2nd ed.). O'Reilly.

Chicago Style (17th ed.) Citation

Sierra, Kathy, and Bert Bates. Head First Java. 2nd ed. Sebastopol, Calif: O'Reilly, 2005.

MLA (9th ed.) Citation

Sierra, Kathy, and Bert Bates. Head First Java. 2nd ed. O'Reilly, 2005.