APA (7th ed.) Citation

Selk, J. (2012). Executive toughness: The mental-training program to increase your leadership performance. McGraw-Hill.

Chicago Style (17th ed.) Citation

Selk, Jason. Executive Toughness: The Mental-training Program to Increase Your Leadership Performance. New York: McGraw-Hill, 2012.

MLA (9th ed.) Citation

Selk, Jason. Executive Toughness: The Mental-training Program to Increase Your Leadership Performance. McGraw-Hill, 2012.