एपीए उद्धरण

Sobel, R. (1981). IBM colossus in transition. New York: Truman Talley Books.

शिकागो स्टाइल उद्धरण

Sobel, Robert. IBM Colossus in Transition. New York: Truman Talley Books, 1981.

एमएलए उद्धरण

Sobel, Robert. IBM Colossus in Transition. New York: Truman Talley Books, 1981.