Cita APA (7a ed.)

Kuhlman, J. M., & Skinner, G. S. (1961). The economic system ([3rd printing].). Richard D. Irwin, Inc.

Cita Chicago Style (17a ed.)

Kuhlman, John M., y Gordon S. Skinner. The Economic System. [3rd printing]. Homewood [etc.]: Richard D. Irwin, Inc, 1961.

Cita MLA (9a ed.)

Kuhlman, John M., y Gordon S. Skinner. The Economic System. [3rd printing]. Richard D. Irwin, Inc, 1961.