Langton, C. V. N. (1941). Orientation in school health. Harper & brothers.
Cita Chicago Style (17a ed.)Langton, Clair Van Norman. Orientation in School Health. New York, London: Harper & brothers, 1941.
Cita MLA (9a ed.)Langton, Clair Van Norman. Orientation in School Health. Harper & brothers, 1941.
Precaución: Estas citas no son 100% exactas.