Wolfe, A. (1989). Whose keeper?: Social science and moral obligation. University of Californiarnia Press.
芝加哥风格引文Wolfe, Alan. Whose Keeper?: Social Science and Moral Obligation. Berkeley; Los Angeles; London: University of Californiarnia Press, 1989.
MLA引文Wolfe, Alan. Whose Keeper?: Social Science and Moral Obligation. University of Californiarnia Press, 1989.
警告：这些引文格式不一定是100％准确.