APA aipamena

Wyatt, S. P. (1971). Principles of astronomy (2nd ed.). Allyn and Bacon.

Chicago Style aipamena

Wyatt, Stanley P. Principles of Astronomy. 2nd ed. Boston: Allyn and Bacon, 1971.

MLA aipamena

Wyatt, Stanley P. Principles of Astronomy. 2nd ed. Allyn and Bacon, 1971.