APA (7th ed.) Zitazioa

PRYOR, F. L. (1963). Communist foreign trade system. Allen & Unwin.

Chicago Style (17th ed.) Zitazioa

PRYOR, Frederic L. Communist Foreign Trade System. London: Allen & Unwin, 1963.

MLA (9th ed.) Zitazioa

PRYOR, Frederic L. Communist Foreign Trade System. Allen & Unwin, 1963.