Dyfyniad APA

Ferrett, S. K. (2010). Peak performance: Success in college and beyond (7th ed.). New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Ferrett, Sharon K. Peak Performance: Success in College and Beyond. 7th ed. New York: McGraw-Hill, 2010.

Dyfyniad MLA

Ferrett, Sharon K. Peak Performance: Success in College and Beyond. 7th ed. New York: McGraw-Hill, 2010.

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