Cita APA (7th ed.)

Smith, A., & Skinner, A. (1999). The wealth of nations: Books 1-3. Penguin Books.

Cita Chicago (17th ed.)

Smith, Adam, i Andrew Skinner. The Wealth of Nations: Books 1-3. London: Penguin Books, 1999.

Cita MLA (9th ed.)

Smith, Adam, i Andrew Skinner. The Wealth of Nations: Books 1-3. Penguin Books, 1999.