Cita APA

Simon, J. L. (1987). Effort, opportunity, and wealth. Oxford: Basil Blackwell.

Chicago Style Citation

Simon, Julian L. Effort, Opportunity, and Wealth. Oxford: Basil Blackwell, 1987.

Cita MLA

Simon, Julian L. Effort, Opportunity, and Wealth. Oxford: Basil Blackwell, 1987.

Atenció: Aquestes cites poden no estar 100% correctes.