Wolfe, A. (1989). Whose Keeper?: Social science and moral obligation. Univ. of California Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWolfe, Alan. Whose Keeper?: Social Science and Moral Obligation. Univ. of California Press, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWolfe, Alan. Whose Keeper?: Social Science and Moral Obligation. Univ. of California Press, 1989.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.