APA (7th ed.) Citation

Simmons, R., Jr. (2004). Hardcore Java. O'Reilly.

Chicago Style (17th ed.) Citation

Simmons, Robert, Jr. Hardcore Java. Sebastopol, CA: O'Reilly, 2004.

MLA (8th ed.) Citation

Simmons, Robert, Jr. Hardcore Java. O'Reilly, 2004.

Warning: These citations may not always be 100% accurate.