Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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