↑ Volume 1 of the 1729 English translation is available as an online scan; limited parts of the 1729 translation (misidentified as based on the 1687 edition) have also been transcribed online.
↑ [In Latin] Isaac Newton's Philosophiae Naturalis Principia Mathematica: the Third edition (1726) with variant readings, assembled and ed. by Alexandre Koyré and I Bernard Cohen with the assistance of Anne Whitman (Cambridge, MA, 1972, Harvard UP)
↑ J M Steele, University of Toronto, (review online from Canadian Association of Physicists) of N Guicciardini's "Reading the Principia: The Debate on Newton’s Mathematical Methods for Natural Philosophy from 1687 to 1736" (Cambridge UP, 1999), a book which also states (summary before title page) that the "Principia" "is considered one of the masterpieces in the history of science".
↑ (tiếng Pháp) Alexis Clairaut, "Du systeme du monde, dans les principes de la gravitation universelle", trong "Histoires (& Memoires) de l'Academie Royale des Sciences" viết năm 1745 (xuất bản 1749), tại trang 329 (theo chú thích trang 329, bài viết của Clairaut thực hiện vào tháng 11 năm 1747).
↑ The content of infinitesimal calculus in the 'Principia' was recognized both in Newton's lifetime and later, among others by the Marquis de l'Hospital, whose 1696 book "Analyse des infiniment petits" (Infinitesimal analysis) stated in its preface, about the 'Principia', that 'nearly all of it is of this calculus' ('lequel est presque tout de ce calcul'). See also D T Whiteside (1970), "The mathematical principles underlying Newton's Principia Mathematica", Journal for the History of Astronomy, vol.1 (1970), 116–138, especially at p.120.
↑ Or "frame" no hypotheses (as traditionally translated at vol.2, p.392, in the 1729 English version).
