APA (7th ed.) Zitazioa
Stewart, R. G. (1973). Environmental stewardship: 6 studies for individual or groups. Intervarsity press.
Chicago Style (17th ed.) Zitazioa
Stewart, Ruth Goring. Environmental Stewardship: 6 Studies for Individual or Groups. Downers Grove: Intervarsity press, 1973.
MLA (9th ed.) Zitazioa
Stewart, Ruth Goring. Environmental Stewardship: 6 Studies for Individual or Groups. Intervarsity press, 1973.
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