Cita APA (7a ed.)
Sheehy, E. P. (1986). Guide to reference books (10th ed.). American Library Association.
Cita Chicago Style (17a ed.)
Sheehy, Eugene Paul. Guide to Reference Books. 10th ed. Chicago: American Library Association, 1986.
Cita MLA (9a ed.)
Sheehy, Eugene Paul. Guide to Reference Books. 10th ed. American Library Association, 1986.
Precaución: Estas citas no son 100% exactas.