Cita APA (7th ed.)

Seeds, M. A. (1986). Foundations of astronomy (2nd ed.). Wadsworth Publishing Company.

Cita Chicago (17th ed.)

Seeds, Michael A. Foundations of Astronomy. 2nd ed. Belmont, Calif: Wadsworth Publishing Company, 1986.

Cita MLA (9th ed.)

Seeds, Michael A. Foundations of Astronomy. 2nd ed. Wadsworth Publishing Company, 1986.