Harvard University Press
- Harvard University Press published the following 2 sources, containing a total of 2 diagrams.
- Nauta, Lodi. 2009. In Defense of Common Sense. Lorenzo Valla’s Humanist Critique of Scholastic Philosophy. Cambridge, MA: Harvard University Press. (1 diagram)
- Heijenoort, Jean van, ed. 1967. From Frege to Gödel. A Source Book in Mathematical Logic, 1879-1931. Cambridge, MA: Harvard University Press. (1 diagram)