APA (7th ed.) Citation

Bradley, F. H. (1920). The principles of logic. G.E. Stechert.

Chicago Style (17th ed.) Citation

Bradley, F. H. The Principles of Logic. New York: G.E. Stechert, 1920.

MLA (9th ed.) Citation

Bradley, F. H. The Principles of Logic. G.E. Stechert, 1920.