Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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