Cita APA

Sheehy, E. P., & Winchell, C. M. (1972). Guide to reference books: Third supplement, 1969-1970 (8th ed.). American Library Association.

Citación estilo Chicago

Sheehy, Eugene P., and Constance M. Winchell. Guide to Reference Books: Third Supplement, 1969-1970. 8th ed. Chicago: American Library Association, 1972.

Cita MLA

Sheehy, Eugene P., and Constance M. Winchell. Guide to Reference Books: Third Supplement, 1969-1970. 8th ed. American Library Association, 1972.