Cita APA (7th ed.)

Dale Carnegie & Associates & Cole, B. (2011). How to win friends and influence people in the digital age. Simon & Schuster.

Cita Chicago (17th ed.)

Dale Carnegie & Associates i Brent Cole. How to Win Friends and Influence People in the Digital Age. New York: Simon & Schuster, 2011.

Cita MLA (9th ed.)

Dale Carnegie & Associates i Brent Cole. How to Win Friends and Influence People in the Digital Age. Simon & Schuster, 2011.