APA (7th ed.) Citation

Arkham House & Derleth, A. (1964). Over the edge. Arkham House.

Chicago Style (17th ed.) Citation

Arkham House and August Derleth. Over the Edge. Sauk City, Wis.: Arkham House, 1964.

MLA (9th ed.) Citation

Arkham House and August Derleth. Over the Edge. Arkham House, 1964.

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