Ferrett, S. K. (2006). Peak performance: Success in college and beyond. Boston: McGraw-Hill.
Čikaški stil citiranjaFerrett, Sharon K. Peak Performance: Success in College and Beyond. Boston: McGraw-Hill, 2006.
MLA način citiranjaFerrett, Sharon K. Peak Performance: Success in College and Beyond. Boston: McGraw-Hill, 2006.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.