APA (7th ed.) Citation

Fetter, F. A. (1911). The principles of economics: With applications to practical problems. Century.

Chicago Style (17th ed.) Citation

Fetter, Frank A. The Principles of Economics: With Applications to Practical Problems. New York: Century, 1911.

MLA (9th ed.) Citation

Fetter, Frank A. The Principles of Economics: With Applications to Practical Problems. Century, 1911.