Dyfyniad APA

(1931). Tests and challenges in sociology (for use with Ross's Principles of sociology, revised edition). The Century co.

Dyfyniad Arddull Chicago

Tests and Challenges in Sociology (for Use with Ross's Principles of Sociology, Revised Edition). New York: The Century co, 1931.

Dyfyniad MLA

Tests and Challenges in Sociology (for Use with Ross's Principles of Sociology, Revised Edition). The Century co, 1931.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.