Cita APA

Freedman, R. A. (2005). Universe: The Solar system. New York: W. H. Freeman and Company.

Citación estilo Chicago

Freedman, Roger A. Universe: The Solar System. New York: W. H. Freeman and Company, 2005.

Cita MLA

Freedman, Roger A. Universe: The Solar System. New York: W. H. Freeman and Company, 2005.