Cita APA (7a ed.)

Special Libraries Association. Geography and Map Division. (1931). Bulletin. [s.n.].

Cita Chicago Style (17a ed.)

Special Libraries Association. Geography and Map Division. Bulletin. Washington: [s.n.], 1931.

Cita MLA (8a ed.)

Special Libraries Association. Geography and Map Division. Bulletin. [s.n.], 1931.