Sayce, V. (1989). Exercise can beat your arthistis. Avery Pu. Group.
Cita Chicago (17th ed.)Sayce, Valerie. Exercise Can Beat Your Arthistis. Avery Pu. Group, 1989.
Cita MLA (9th ed.)Sayce, Valerie. Exercise Can Beat Your Arthistis. Avery Pu. Group, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.