Newton, I., & University of Cambridge. (1888). A catalogue of the Portsmouth collection of books and papers written by or belonging to Sir Isaac Newton: The scientific portion of which has been presented by the Earl of Portsmouth to the University of Cambridge. University Press.

Newton, Isaac, and University of Cambridge. A Catalogue of the Portsmouth Collection of Books and Papers Written by or Belonging to Sir Isaac Newton: The Scientific Portion of Which Has Been Presented by the Earl of Portsmouth to the University of Cambridge. University Press, 1888.