APA (7th ed.) Citation

Cohen, I. B. (1971). Introduction to Newton's 'Principia'. Harvard Univ. Pr.

Chicago Style (17th ed.) Citation

Cohen, I. Bernhard. Introduction to Newton's 'Principia'. Cambridge, Mass: Harvard Univ. Pr, 1971.

MLA (9th ed.) Citation

Cohen, I. Bernhard. Introduction to Newton's 'Principia'. Harvard Univ. Pr, 1971.

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