APA-referens

Fraknoi, A., & Morrison, D. W. (2000). Voyages to the stars and galaxies (2nd.). Saunders College Publishing.

Chicago-stil citat

Fraknoi, Andrew, och David Wolff Morrison. Voyages to the Stars and Galaxies. 2nd. New York: Saunders College Publishing, 2000.

MLA-referens

Fraknoi, Andrew, och David Wolff Morrison. Voyages to the Stars and Galaxies. 2nd. Saunders College Publishing, 2000.