APA (7th ed.) Citation

Heard, G. (1948). The lost cavern: And other tales of the fantastic. Vanguard Press.

Chicago Style (17th ed.) Citation

Heard, Gerald. The Lost Cavern: And Other Tales of the Fantastic. New York: Vanguard Press, 1948.

MLA (9th ed.) Citation

Heard, Gerald. The Lost Cavern: And Other Tales of the Fantastic. Vanguard Press, 1948.