Wilkinson, L. (1980). Earthkeeping: Christian stewardship of natural resources. Wm.B.Eerdmans.
Tohutoru Kātū Chicago (17th ed.)Wilkinson, Loren. Earthkeeping: Christian Stewardship of Natural Resources. Grand Rapids: Wm.B.Eerdmans, 1980.
Tohutoro MLA (9th ed.)Wilkinson, Loren. Earthkeeping: Christian Stewardship of Natural Resources. Wm.B.Eerdmans, 1980.
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