एपीए उद्धरण

Krauskopt, K. B. (1997). The physical universe. New York: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Krauskopt, Konrad Bates. The Physical Universe. New York: McGraw-Hill, 1997.

एमएलए उद्धरण

Krauskopt, Konrad Bates. The Physical Universe. New York: McGraw-Hill, 1997.