Cita APA (7a ed.)

Harkins, P. J. (1999). Powerful conversations: How high-impact leaders communicate (1st edition.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Harkins, Philip J. Powerful Conversations: How High-impact Leaders Communicate. 1st edition. New York: McGraw-Hill, 1999.

Cita MLA (9a ed.)

Harkins, Philip J. Powerful Conversations: How High-impact Leaders Communicate. 1st edition. McGraw-Hill, 1999.