Cita APA (7th ed.)

Blodgett, R. H. (1946). Principles of economics (Rev. ed.). Rinehart.

Cita Chicago (17th ed.)

Blodgett, Ralph Hamilton. Principles of Economics. Rev. ed. New York: Rinehart, 1946.

Cita MLA (9th ed.)

Blodgett, Ralph Hamilton. Principles of Economics. Rev. ed. Rinehart, 1946.