APA (7th ed.) Citation

Cassel, G. (1925). Fundamental thoughts in economics. Harcourt, Brace.

Chicago Style (17th ed.) Citation

Cassel, Gustav. Fundamental Thoughts in Economics. New York: Harcourt, Brace, 1925.

MLA (9th ed.) Citation

Cassel, Gustav. Fundamental Thoughts in Economics. Harcourt, Brace, 1925.