Cita APA (7a ed.)

Young Men's Christian Association & Sammann, P. (1994). YMCA healthy back book: : [a proven program from the world leader in back care education]. Human kinetics.

Cita Chicago Style (17a ed.)

Young Men's Christian Association y Patricia Sammann. YMCA Healthy Back Book: : [a Proven Program from the World Leader in Back Care Education]. Champaign: Human kinetics, 1994.

Cita MLA (9a ed.)

Young Men's Christian Association y Patricia Sammann. YMCA Healthy Back Book: : [a Proven Program from the World Leader in Back Care Education]. Human kinetics, 1994.