APA (7th ed.) Citation

Packard, E., & Hedin, D. (1985). Return to the cave of time. Bantam.

Chicago Style (17th ed.) Citation

Packard, Edward, and Don Hedin. Return to the Cave of Time. Toronto ; New York: Bantam, 1985.

MLA (9th ed.) Citation

Packard, Edward, and Don Hedin. Return to the Cave of Time. Bantam, 1985.