एपीए उद्धरण

Freidel, F., & Pollack, N. (1966). American Issues in theTwentieth Century. Sceintific Book Company.

शिकागो स्टाइल उद्धरण

Freidel, Frand, और Norman Pollack. American Issues in TheTwentieth Century. Calcutta: Sceintific Book Company, 1966.

एमएलए उद्धरण

Freidel, Frand, और Norman Pollack. American Issues in TheTwentieth Century. Sceintific Book Company, 1966.