APA (7th ed.) Citation

Pohl, F. (1994). The voices of heaven (1. ed.). Tor.

Chicago Style (17th ed.) Citation

Pohl, Frederik. The Voices of Heaven. 1. ed. New York: Tor, 1994.

MLA (9th ed.) Citation

Pohl, Frederik. The Voices of Heaven. 1. ed. Tor, 1994.