APA (7th ed.) Citation

Lovecraft, H. P., & Derleth, A. (1974). The watchers out of time, and others. Arkham House.

Chicago Style (17th ed.) Citation

Lovecraft, H. P., and August Derleth. The Watchers Out of Time, and Others. Sauk City, Wis.: Arkham House, 1974.

MLA (9th ed.) Citation

Lovecraft, H. P., and August Derleth. The Watchers Out of Time, and Others. Arkham House, 1974.