Παραπομπή APA

Winchell, C. M. (1967). Guide to reference books (8th.). American Library Association.

Παραπομπή Chicago Style

Winchell, Constance M. Guide to Reference Books. 8th. Chicago: American Library Association, 1967.

Παραπομπή MLA

Winchell, Constance M. Guide to Reference Books. 8th. American Library Association, 1967.