APA (7th ed.) Citation

Carnap, R., & Morris, C. (1955). International encyclopedia of unified science ([Combined ed.].). University of Chicago Press.

Chicago Style (17th ed.) Citation

Carnap, Rudolf, and Charles Morris. International Encyclopedia of Unified Science. [Combined ed.]. Chicago: University of Chicago Press, 1955.

MLA (9th ed.) Citation

Carnap, Rudolf, and Charles Morris. International Encyclopedia of Unified Science. [Combined ed.]. University of Chicago Press, 1955.