Pasachoff, J. M., & Tirion, W. (2000). A field guide to the stars and planets (4th ed.). New York, NY.: Houghton Mifflin Company.
Παραπομπή Chicago StylePasachoff, Jay M., and Wil Tirion. A Field Guide to the Stars and Planets. 4th ed. New York, NY.: Houghton Mifflin Company, 2000.
Παραπομπή MLAPasachoff, Jay M., and Wil Tirion. A Field Guide to the Stars and Planets. 4th ed. New York, NY.: Houghton Mifflin Company, 2000.
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