Caspar, M. (1959). Kepler. Abelard-Schuman.
Cita Chicago (17th ed.)Caspar, Max. Kepler. London, New York: Abelard-Schuman, 1959.
Cita MLA (9th ed.)Caspar, Max. Kepler. Abelard-Schuman, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.
Caspar, M. (1959). Kepler. Abelard-Schuman.
Cita Chicago (17th ed.)Caspar, Max. Kepler. London, New York: Abelard-Schuman, 1959.
Cita MLA (9th ed.)Caspar, Max. Kepler. Abelard-Schuman, 1959.