Cita APA

Heil, J. (2012). The universe as we find it. New York, NY, United States of America: Oxford University Press.

Citación estilo Chicago

Heil, John. The Universe As We Find It. New York, NY, United States of America: Oxford University Press, 2012.

Cita MLA

Heil, John. The Universe As We Find It. New York, NY, United States of America: Oxford University Press, 2012.