APA ציטוט

Seeds, M. A., & Backman, D. E. (2017). Foundations of astronomy (Enhanced thirteenth edition.). Cengage Learning.

Chicago Style (17th ed.) Citation

Seeds, Michael A., and Dana E. Backman. Foundations of Astronomy. Enhanced thirteenth edition. Boston, MA, USA: Cengage Learning, 2017.

ציטוט MLA

Seeds, Michael A., and Dana E. Backman. Foundations of Astronomy. Enhanced thirteenth edition. Cengage Learning, 2017.