Cita APA (7a ed.)

Gilbert Mudge, I. (1936). Guide to Reference Books (6a ed.). American Library Association.

Cita Chicago Style (17a ed.)

Gilbert Mudge, Isadore. Guide to Reference Books. 6a ed. Chicago: American Library Association, 1936.

Cita MLA (9a ed.)

Gilbert Mudge, Isadore. Guide to Reference Books. 6a ed. American Library Association, 1936.