APA (7th ed.) Citation

Froman, L. A. (1946). Principles of economics (Rev. ed.). R. D. Irwin.

Chicago Style (17th ed.) Citation

Froman, Lewis Acrelius. Principles of Economics. Rev. ed. Chicago: R. D. Irwin, 1946.

MLA (9th ed.) Citation

Froman, Lewis Acrelius. Principles of Economics. Rev. ed. R. D. Irwin, 1946.