Franklin, E. N. (2010). Happy feet: Dynamic base, effortless posture : Franklin Ball and imagery exercises for the feet, knees, and lower legs. OPTP.
Chicago-referens (17:e uppl.)Franklin, Eric N. Happy Feet: Dynamic Base, Effortless Posture : Franklin Ball and Imagery Exercises for the Feet, Knees, and Lower Legs. Minneapolis, Minn.: OPTP, 2010.
MLA-referens (9:e uppl.)Franklin, Eric N. Happy Feet: Dynamic Base, Effortless Posture : Franklin Ball and Imagery Exercises for the Feet, Knees, and Lower Legs. OPTP, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.