Langton, C. V. N. (1941). Orientation in school health. Harper & brothers.
Lua i Stíl Chicago (17ú heag.)Langton, Clair Van Norman. Orientation in School Health. New York, London: Harper & brothers, 1941.
Lua MLA (9ú heag.)Langton, Clair Van Norman. Orientation in School Health. Harper & brothers, 1941.
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