APA (7th ed.) Citation

Winchell, C. M., & Mudge, I. G. (1951). Guide to reference books (7th ed.). American Library Association.

Chicago Style (17th ed.) Citation

Winchell, Constance M., and Isadore Gilbert Mudge. Guide to Reference Books. 7th ed. Chicago: American Library Association, 1951.

MLA (9th ed.) Citation

Winchell, Constance M., and Isadore Gilbert Mudge. Guide to Reference Books. 7th ed. American Library Association, 1951.