Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.