Cita APA (7th ed.)

Gess, K. N. (1975). The market for international congresses. U.S. Govt. Print. Off.

Cita Chicago (17th ed.)

Gess, Karol N. The Market for International Congresses. Washington: U.S. Govt. Print. Off, 1975.

Cita MLA (9th ed.)

Gess, Karol N. The Market for International Congresses. U.S. Govt. Print. Off, 1975.