APA استشهاد

Soule, G. (1967). Planning U.S.A. Scientific Book Agency.

استشهاد بنمط شيكاغو

Soule, George. Planning U.S.A. Calcutta: Scientific Book Agency, 1967.

MLA استشهاد

Soule, George. Planning U.S.A. Scientific Book Agency, 1967.