Dyfyniad APA

Ferrett, S. K. (2006). Peak performance: Success in college and beyond (5th ed.). New York, N.Y.: McGraw-Hill.

Dyfyniad Arddull Chicago

Ferrett, Sharon K. Peak Performance: Success in College and Beyond. 5th ed. New York, N.Y.: McGraw-Hill, 2006.

Dyfyniad MLA

Ferrett, Sharon K. Peak Performance: Success in College and Beyond. 5th ed. New York, N.Y.: McGraw-Hill, 2006.

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