APA (7th ed.) Zitazioa

Fiedler, E., Jansen, R., & Norman-Risch, M. (1990). America in close-up. Longman.

Chicago Style (17th ed.) Zitazioa

Fiedler, Eckhard, Reimer Jansen, eta Mil Norman-Risch. America in Close-up. Essex: Longman, 1990.

MLA (9th ed.) Zitazioa

Fiedler, Eckhard, et al. America in Close-up. Longman, 1990.