APA (7th ed.) Citation

Shreffler, P. A. (1977). The H. P. Lovecraft companion. Greenwood Press.

Chicago Style (17th ed.) Citation

Shreffler, Philip A. The H. P. Lovecraft Companion. Westport, Conn.: Greenwood Press, 1977.

MLA (9th ed.) Citation

Shreffler, Philip A. The H. P. Lovecraft Companion. Greenwood Press, 1977.