Newton, Isaac and Percival Frost. Principia first book, sections I, II, III. Fourth edition. London : Macmillan and Co., 1883.
APA
Newton, I. & Frost, P. (1883). Principia first book, sections I, II, III. Fourth edition. London : Macmillan and Co..
Chicago
Newton, Isaac and Percival Frost. Principia first book, sections I, II, III. Edited by Percival Frost. Fourth edition. London : Macmillan and Co., 1883.