APA (7th ed.) Zitazioa

Hawken, P. (1983). The next economy. Holt, Rinehart and Winston.

Chicago Style (17th ed.) Zitazioa

Hawken, Paul. The Next Economy. New York: Holt, Rinehart and Winston, 1983.

MLA (9th ed.) Zitazioa

Hawken, Paul. The Next Economy. Holt, Rinehart and Winston, 1983.