Wallace, A. R. (1914). Social environment and moral progress. Funk and Wagnalls.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWallace, Alfred Russel. Social Environment and Moral Progress. New York: Funk and Wagnalls, 1914.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWallace, Alfred Russel. Social Environment and Moral Progress. Funk and Wagnalls, 1914.
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