APA Style

Doyle, S, A, C., Spalenka, G. (1990). A study in Scarlet: The hound of the Baskervilles . : Readers Digest.

MLA Style

Doyle, Sir, Arthur, Conan., Spalenka, Greg. "A study in Scarlet: The hound of the Baskervilles". : Readers Digest, 1990. Text.