APA (7th ed.) Citation

Caspar, M., & Hellman, C. D. (1959). Kepler / by M. Caspar ; edited by C.D. Hellman. Abelard-Schuman.

Chicago Style (17th ed.) Citation

Caspar, M., and C. D. Hellman. Kepler / by M. Caspar ; Edited by C.D. Hellman. Abelard-Schuman, 1959.

MLA (9th ed.) Citation

Caspar, M., and C. D. Hellman. Kepler / by M. Caspar ; Edited by C.D. Hellman. Abelard-Schuman, 1959.

Warning: These citations may not always be 100% accurate.