APA-Zitierstil (7. Ausg.)

Hartmann, W. K. (1991). Astronomy. The cosmic journey (5th ed.). Wadsworth Publishing.

Chicago-Zitierstil (17. Ausg.)

Hartmann, William K. Astronomy. The Cosmic Journey. 5th ed. Belmont: Wadsworth Publishing, 1991.

MLA-Zitierstil (9. Ausg.)

Hartmann, William K. Astronomy. The Cosmic Journey. 5th ed. Wadsworth Publishing, 1991.