(1931). Tests and challenges in sociology (for use with Ross's Principles of sociology, revised edition). The Century co.
Citace podle Chicago (17th ed.)Tests and Challenges in Sociology (for Use with Ross's Principles of Sociology, Revised Edition). New York: The Century co, 1931.
Citace podle MLA (9th ed.)Tests and Challenges in Sociology (for Use with Ross's Principles of Sociology, Revised Edition). The Century co, 1931.
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