(1966). Health and Strength. London: Health and Strength Publ. Co.
Cita Chicago (17th ed.)Health and Strength. London: Health and Strength Publ. Co, 1966.
Cita MLA (8th ed.)Health and Strength. London: Health and Strength Publ. Co, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.