एपीए उद्धरण

Kutmer, M. L. (1987). Astronomy: A physical perspective. Harper & Row.

शिकागो स्टाइल उद्धरण

Kutmer, Marc L. Astronomy: A Physical Perspective. New York: Harper & Row, 1987.

एमएलए उद्धरण

Kutmer, Marc L. Astronomy: A Physical Perspective. Harper & Row, 1987.