APA (7th ed.) Citation

William of Ockham, c. 1. 1., & Boehner, P. (1957). Summa logicae. Franciscan Institute [etc.].

Chicago Style (17th ed.) Citation

William of Ockham, ca. 1285-ca. 1349., and Philotheus Boehner. Summa Logicae. St. Bonaventure (New York) [etc.]: Franciscan Institute [etc.], 1957.

MLA (9th ed.) Citation

William of Ockham, ca. 1285-ca. 1349., and Philotheus Boehner. Summa Logicae. Franciscan Institute [etc.], 1957.