Burkard, W. E., Chambers, R. L., & Maroney, F. W. (1931). Health and human welfare: A health text for secondary schools. Lyons and Carnahan.
Citace podle Chicago (17th ed.)Burkard, William Edwin, Raymond Lippincott Chambers, a Frederick William Maroney. Health and Human Welfare: A Health Text for Secondary Schools. Chicago, New York: Lyons and Carnahan, 1931.
Citace podle MLA (8th ed.)Burkard, William Edwin, et al. Health and Human Welfare: A Health Text for Secondary Schools. Lyons and Carnahan, 1931.
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