APA (7th ed.) Zitazioa

Gregory, C. A. (1989). Observing the economy. Routledge.

Chicago Style (17th ed.) Zitazioa

Gregory, Christroper A. Observing the Economy. New York: Routledge, 1989.

MLA (9th ed.) Zitazioa

Gregory, Christroper A. Observing the Economy. Routledge, 1989.