South Africa. Dept. of National Health and Population Development. (1987). Workbook on smoking: Standards 3-7. Dept. of National Health and Population Development.
Citace podle Chicago (17th ed.)South Africa. Dept. of National Health and Population Development. Workbook on Smoking: Standards 3-7. [Pretoria]: Dept. of National Health and Population Development, 1987.
Citace podle MLA (8th ed.)South Africa. Dept. of National Health and Population Development. Workbook on Smoking: Standards 3-7. Dept. of National Health and Population Development, 1987.
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