APA (7th ed.) Zitazioa

(1998). Stewardship across boundaries. Island Pr..

Chicago Style (17th ed.) Zitazioa

Stewardship Across Boundaries. Washington, D.C: Island Pr., 1998.

MLA (9th ed.) Zitazioa

Stewardship Across Boundaries. Island Pr., 1998.