Kaler, J., & Wilson, G. (2003). Astronomy i: Earth, sky and planets (Unabridged.). Recorded Books Inc..
Cita Chicago Style (17a ed.)Kaler, James, y George Wilson. Astronomy I: Earth, Sky and Planets. Unabridged. Prince Frederick: Recorded Books Inc., 2003.
Cita MLA (8a ed.)Kaler, James, y George Wilson. Astronomy I: Earth, Sky and Planets. Unabridged. Recorded Books Inc., 2003.
Precaución: Estas citas no son 100% exactas.