Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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