Kovalevsky, J. (1967). Introduction to celestial mechanics. D. Reidel.
Cita Chicago (17th ed.)Kovalevsky, Jean. Introduction to Celestial Mechanics. Dordrecht-Holland: D. Reidel, 1967.
Cita MLA (9th ed.)Kovalevsky, Jean. Introduction to Celestial Mechanics. D. Reidel, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.