Schaaf, F. (1991). Seeing the solar system: Telescopic projects, activities, and explorations in astronomy. Wiley.
Cita Chicago Style (17a ed.)Schaaf, Fred. Seeing the Solar System: Telescopic Projects, Activities, and Explorations in Astronomy. New York: Wiley, 1991.
Cita MLA (8a ed.)Schaaf, Fred. Seeing the Solar System: Telescopic Projects, Activities, and Explorations in Astronomy. Wiley, 1991.
Precaución: Estas citas no son 100% exactas.