APA (7th ed.) Citation

Ahrens, D. F. (1964). Cooperative social studies tests. Educational Testing Service, ETS - Cooperative Test Division, CTD.

Chicago Style (17th ed.) Citation

Ahrens, Dolores F. Cooperative Social Studies Tests. Princeton, N.J. [u.a.]: Educational Testing Service, ETS - Cooperative Test Division, CTD, 1964.

MLA (9th ed.) Citation

Ahrens, Dolores F. Cooperative Social Studies Tests. Educational Testing Service, ETS - Cooperative Test Division, CTD, 1964.