APA (7th ed.) Citation

Piper, H. B. (1981). Paratime. Ace Books.

Chicago Style (17th ed.) Citation

Piper, H. Beam. Paratime. New York: Ace Books, 1981.

MLA (8th ed.) Citation

Piper, H. Beam. Paratime. Ace Books, 1981.

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