Dyfyniad APA

Greenberg, J. S. (2009). Comprehensive stress management (11th ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Greenberg, Jerrold S. Comprehensive Stress Management. 11th ed. New York, NY: McGraw-Hill, 2009.

Dyfyniad MLA

Greenberg, Jerrold S. Comprehensive Stress Management. 11th ed. McGraw-Hill, 2009.

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