Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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