APA (7th ed.) Citation

Grabo, C. H. (1917). The amateur philosopher. C. Scribner's sons.

Chicago Style (17th ed.) Citation

Grabo, Carl Henry. The Amateur Philosopher. New York: C. Scribner's sons, 1917.

MLA (9th ed.) Citation

Grabo, Carl Henry. The Amateur Philosopher. C. Scribner's sons, 1917.