APA Style
Seeds, Michael A., Backman, Dana E.. (2017).
Foundations of astronomy (13th ed.).
Boston, MA:
Cengage Learning.
Chicago Style
Seeds, Michael A., Backman, Dana E..
Foundations of astronomy.
13th ed.
Boston, MA:
Cengage Learning,
2017.
Text.
MLA Style
Seeds, Michael A., Backman, Dana E..
Foundations of astronomy.
13th ed.
Boston, MA:
Cengage Learning,
2017.
Text.
Turabian Style
Seeds, Michael A., Backman, Dana E..
Foundations of astronomy.
13th ed.
Boston, MA:
Cengage Learning,
2017.
Print.