Kovalevsky, J. (1967). Introduction to celestial mechanics. D. Reidel.
Chicago Style (17th ed.) ZitazioaKovalevsky, Jean. Introduction to Celestial Mechanics. Dordrecht-Holland: D. Reidel, 1967.
MLA (9th ed.) ZitazioaKovalevsky, Jean. Introduction to Celestial Mechanics. D. Reidel, 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.