APA (7th ed.) Zitazioa

Oppenheim, C., & Citroen, C. L. (1989). Perspectives in information management 1. Butterworths.

Chicago Style (17th ed.) Zitazioa

Oppenheim, Charles, eta Charles L. Citroen. Perspectives in Information Management 1. London: Butterworths, 1989.

MLA (9th ed.) Zitazioa

Oppenheim, Charles, eta Charles L. Citroen. Perspectives in Information Management 1. Butterworths, 1989.