Gardner, M., & Schroeder, T. (1997). Puzzling questions about the solar system. Dover Publications.
Style de citation ChicagoGardner, Martin, et Ted Schroeder. Puzzling Questions About the Solar System. Mineola, N.Y.: Dover Publications, 1997.
Style de citation MLAGardner, Martin, et Ted Schroeder. Puzzling Questions About the Solar System. Dover Publications, 1997.
Attention : ces citations peuvent ne pas être correctes à 100%.