Cita APA (7th ed.)
Smith, A. (1999). The Wealth of Nations. Penguin Books.
Cita Chicago (17th ed.)
Smith, Adam. The Wealth of Nations. London: Penguin Books, 1999.
Cita MLA (9th ed.)
Smith, Adam. The Wealth of Nations. Penguin Books, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.