APA (7th ed.) Citation

Powell, C. L., & Koltz, T. (2012). It worked for me: In life and leadership. Harperaudio.

Chicago Style (17th ed.) Citation

Powell, Colin L., and Tony Koltz. It Worked for Me: In Life and Leadership. [United States]: Harperaudio, 2012.

MLA (8th ed.) Citation

Powell, Colin L., and Tony Koltz. It Worked for Me: In Life and Leadership. Harperaudio, 2012.

Warning: These citations may not always be 100% accurate.