APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Winchell, Constance Mabel. Guide to Reference Books. 7th ed. Chicago: American Library Association, 1951.

MLA (9th ed.) Citation

Winchell, Constance Mabel. Guide to Reference Books. 7th ed. American Library Association, 1951.

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