APA (7th ed.) Citation

Newton, I., & Cohen, I. B. (1999). The principia: Mathematical principles of natural philosophy. Univ. of California Press.

Chicago Style (17th ed.) Citation

Newton, Isaac, and I. Bernhard Cohen. The Principia: Mathematical Principles of Natural Philosophy. Berkeley, Calif. [u.a.]: Univ. of California Press, 1999.

MLA (9th ed.) Citation

Newton, Isaac, and I. Bernhard Cohen. The Principia: Mathematical Principles of Natural Philosophy. Univ. of California Press, 1999.