Gaya APA

Stewart, J, P., Stewart, D, J. (2009). Lead Now! : A Personal Leadership Coaching Guide For Results-Driven Leaders . United States of America: Leadership Excellence.

Gaya MLA

Stewart, John, Parker., Stewart, Daniel, J.. "Lead Now! : A Personal Leadership Coaching Guide For Results-Driven Leaders". United States of America: Leadership Excellence, 2009. FIC.