APA (7th ed.) Citation

Steinbeck, J., & Keenan, M. (1992). To a god unknown (Special Library edition.). Books on Tape.

Chicago Style (17th ed.) Citation

Steinbeck, John, and Michael Keenan. To a God Unknown. Special Library edition. Newport Beach, Calif.: Books on Tape, 1992.

MLA (9th ed.) Citation

Steinbeck, John, and Michael Keenan. To a God Unknown. Special Library edition. Books on Tape, 1992.