Arny, T. T. (1994). Explorations: An introduction to astronomy. Mosby.
Lua i Stíl Chicago (17ú heag.)Arny, Thomas T. Explorations: An Introduction to Astronomy. St. Louis: Mosby, 1994.
Lua MLA (9ú heag.)Arny, Thomas T. Explorations: An Introduction to Astronomy. Mosby, 1994.
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