APA (7th ed.) Citation
Hartmann, W. K. (1991). Astronomy: The cosmic journey (5.vyd.).
Chicago Style (17th ed.) Citation
Hartmann, Wiliam K. Astronomy: The Cosmic Journey. 5.vyd. Belmont, 1991.
MLA (9th ed.) Citation
Hartmann, Wiliam K. Astronomy: The Cosmic Journey. 5.vyd. 1991.
Warning: These citations may not always be 100% accurate.