Cita APA (7a ed.)

Shultz, E., & Simmons, W. (1959). Offices in the sky by Earle Shultz and Walter Simmons . The new Bobbs-Merrill company.

Cita Chicago Style (17a ed.)

Shultz, Earle, y Walter Simmons. Offices in the Sky by Earle Shultz and Walter Simmons . Indianapolis, New York: The new Bobbs-Merrill company, 1959.

Cita MLA (9a ed.)

Shultz, Earle, y Walter Simmons. Offices in the Sky by Earle Shultz and Walter Simmons . The new Bobbs-Merrill company, 1959.