Wallace, A. R. (1913). Social environment and moral progress. Cassell and Co..
Čikaški stil citiranja (17. izdanje)Wallace, Alfred Russel. Social Environment and Moral Progress. London, New York [etc.]: Cassell and Co., 1913.
MLA način citiranja (8. izdanje)Wallace, Alfred Russel. Social Environment and Moral Progress. Cassell and Co., 1913.
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