Cita APA (7th ed.)

Seligman, E. R. A. (1907). Principles of economics: With special reference to American conditions (3d ed., rev. and enl.). Longmans, Green, and co..

Cita Chicago (17th ed.)

Seligman, Edwin R. A. Principles of Economics: With Special Reference to American Conditions. 3d ed., rev. and enl. New York [etc.]: Longmans, Green, and co., 1907.

Cita MLA (8th ed.)

Seligman, Edwin R. A. Principles of Economics: With Special Reference to American Conditions. 3d ed., rev. and enl. Longmans, Green, and co., 1907.