APA (7th ed.) Citation

Zinn, R. (2016). Tough things first: Leadership lessons from Silicon Valley's longest serving CEO (1st edition.). McGraw-Hill Education.

Chicago Style (17th ed.) Citation

Zinn, Ray. Tough Things First: Leadership Lessons from Silicon Valley's Longest Serving CEO. 1st edition. New York, New York: McGraw-Hill Education, 2016.

MLA (9th ed.) Citation

Zinn, Ray. Tough Things First: Leadership Lessons from Silicon Valley's Longest Serving CEO. 1st edition. McGraw-Hill Education, 2016.