Cita APA (7a ed.)

Wyatt, S. P. (1972). Principles of Astronomy. Allyn and Bacon.

Cita Chicago Style (17a ed.)

Wyatt, Stanley P. Principles of Astronomy. Boston: Allyn and Bacon, 1972.

Cita MLA (9a ed.)

Wyatt, Stanley P. Principles of Astronomy. Allyn and Bacon, 1972.