Gaya APA

Kohn, S, E., O’Connell, V, D. (2005). 6 Habits of Highly Effective Bosses . United States of America: The Career Press, Inc..

Gaya MLA

Kohn, Stephen, E.., O’Connell, Vincent, D.. "6 Habits of Highly Effective Bosses". United States of America: The Career Press, Inc., 2005. Text.