Cita APA (7th ed.)

Bower, S. A., & Bower, G. H. (1991). Asserting yourself: A practical guide for positive change (Updated edition.). Addison-Wesley.

Cita Chicago (17th ed.)

Bower, Sharon Anthony, i Gordon H. Bower. Asserting Yourself: A Practical Guide for Positive Change. Updated edition. Reading, Mass: Addison-Wesley, 1991.

Cita MLA (9th ed.)

Bower, Sharon Anthony, i Gordon H. Bower. Asserting Yourself: A Practical Guide for Positive Change. Updated edition. Addison-Wesley, 1991.