Achua, C. F. (2010). Effective Leadership. South-Western Cengage Learning.
Chicago-viite (17. p.)Achua, Christopher F. Effective Leadership. South-Western Cengage Learning, 2010.
MLA-viite (8. p.)Achua, Christopher F. Effective Leadership. South-Western Cengage Learning, 2010.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.