Moulton, F. R. (1970). An Introduction to celestial mechanics (2nd ed.). Dover Publications.
Lua i Stíl Chicago (17ú heag.)Moulton, Forest Ray. An Introduction to Celestial Mechanics. 2nd ed. New York: Dover Publications, 1970.
Lua MLA (9ú heag.)Moulton, Forest Ray. An Introduction to Celestial Mechanics. 2nd ed. Dover Publications, 1970.
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