एपीए उद्धरण

Scientific American. (1969). Readings in the earth science (14th ed.). W H Freeman.

शिकागो स्टाइल उद्धरण

Scientific American. Readings in the Earth Science. 14th ed. San Francisco: W H Freeman, 1969.

एमएलए उद्धरण

Scientific American. Readings in the Earth Science. 14th ed. W H Freeman, 1969.