Wilkinson, L. (1980). Earthkeeping: Christian stewardship of natural resources. Wm.B.Eerdmans.
芝加哥风格引文Wilkinson, Loren. Earthkeeping: Christian Stewardship of Natural Resources. Grand Rapids: Wm.B.Eerdmans, 1980.
MLA引文Wilkinson, Loren. Earthkeeping: Christian Stewardship of Natural Resources. Wm.B.Eerdmans, 1980.
警告：这些引文格式不一定是100％准确.