Friel, J. (2016). The triathlete's training bible: The world's most comprehensive training guide (4th edition.). VeloPress.
Chicago-Zitierstil (17. Ausg.)Friel, Joe. The Triathlete's Training Bible: The World's Most Comprehensive Training Guide. 4th edition. Boulder, Colorado: VeloPress, 2016.
MLA-Zitierstil (9. Ausg.)Friel, Joe. The Triathlete's Training Bible: The World's Most Comprehensive Training Guide. 4th edition. VeloPress, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.