APA (7e ed.) Bronvermelding

Franklin, E. N. (2010). Happy feet: Dynamic base, effortless posture : Franklin Ball and imagery exercises for the feet, knees, and lower legs. OPTP.

Chicago (17e ed.) Bronvermelding

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 (9e ed.) Bronvermelding

Franklin, Eric N. Happy Feet: Dynamic Base, Effortless Posture : Franklin Ball and Imagery Exercises for the Feet, Knees, and Lower Legs. OPTP, 2010.