Cita APA

Comins, N. F., & Kaufmann, W. J. (2008). Discovering the universe. New York : W. H. Freeman.

Citación estilo Chicago

Comins, Neil F., and William J. Kaufmann. Discovering the Universe. New York : W. H. Freeman, 2008.

Cita MLA

Comins, Neil F., and William J. Kaufmann. Discovering the Universe. New York : W. H. Freeman, 2008.

Warning: These citations may not always be 100% accurate.