Fraknoi, A., & Morrison, D. W. (2000). Voyages to the stars and galaxies (2nd.). Saunders College Publishing.
استشهاد بنمط شيكاغوFraknoi, Andrew, و David Wolff Morrison. Voyages to the Stars and Galaxies. 2nd. New York: Saunders College Publishing, 2000.
MLA استشهادFraknoi, Andrew, و David Wolff Morrison. Voyages to the Stars and Galaxies. 2nd. Saunders College Publishing, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.