Cita APA (7th ed.)

New York Public Library. (1989). The New York Public Library desk reference. Webster's New World.

Cita Chicago (17th ed.)

New York Public Library. The New York Public Library Desk Reference. New York: Webster's New World, 1989.

Cita MLA (9th ed.)

New York Public Library. The New York Public Library Desk Reference. Webster's New World, 1989.