APA (7th ed.) Citation

Biggle, L. (1966). Watchers of the dark. Rapp & Whiting.

Chicago Style (17th ed.) Citation

Biggle, Lloyd. Watchers of the Dark. London: Rapp & Whiting, 1966.

MLA (8th ed.) Citation

Biggle, Lloyd. Watchers of the Dark. Rapp & Whiting, 1966.

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