Gaya APA

Achua, R, N, L, C, F. (2010). Leadership : theory, application, & skill development 4e . USA: Cengage Learning. All.

Gaya MLA

Achua, Robert, N., Lussier, Christopher, F.. "Leadership : theory, application, & skill development 4e". USA: Cengage Learning. All, 2010. Electronic Resource.