Bliss, W. D. P. (1898). Encyclopedia of social reform: Including political economy, political science, sociology and statistics. Funk & Wagnalls company.
Chicago-referens (17:e uppl.)Bliss, William Dwight Porter. Encyclopedia of Social Reform: Including Political Economy, Political Science, Sociology and Statistics. New York and London: Funk & Wagnalls company, 1898.
MLA-referens (8:e uppl.)Bliss, William Dwight Porter. Encyclopedia of Social Reform: Including Political Economy, Political Science, Sociology and Statistics. Funk & Wagnalls company, 1898.
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