APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Newton, Isaac, and I. Bernard Cohen. The Principia: Mathematical Principles of Natural Philosophy. Berkeley: University of California Press, 1999.

MLA (8th ed.) Citation

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

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