Fix, J. D. (2006). Astronomy: Journey to the cosmic frontier. New York: McGraw-Hill Higher Education.
Trích dẫn kiểu ChicagoFix, John D. Astronomy: Journey to the Cosmic Frontier. New York: McGraw-Hill Higher Education, 2006.
Deismireacht MLAFix, John D. Astronomy: Journey to the Cosmic Frontier. New York: McGraw-Hill Higher Education, 2006.
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