Cita APA (7a ed.)

Daugherty, C. R. (1950). Principles of political economy. Houghton Mifflin.

Cita Chicago Style (17a ed.)

Daugherty, Carroll R. Principles of Political Economy. Boston [etc.]: Houghton Mifflin, 1950.

Cita MLA (9a ed.)

Daugherty, Carroll R. Principles of Political Economy. Houghton Mifflin, 1950.