Gibbs, W. S. (1917). The minimum cost of living: A study of families of limited income in New York city. Macmillan Co..
Chicago-referens (17:e uppl.)Gibbs, Winifred S. The Minimum Cost of Living: A Study of Families of Limited Income in New York City. New York: Macmillan Co., 1917.
MLA-referens (8:e uppl.)Gibbs, Winifred S. The Minimum Cost of Living: A Study of Families of Limited Income in New York City. Macmillan Co., 1917.
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