Helman, C. (2000). Culture, health, and illness (4th ed.). Butterworth-Heinemann.
Lua i Stíl Chicago (17ú heag.)Helman, Cecil. Culture, Health, and Illness. 4th ed. Oxford ; Boston: Butterworth-Heinemann, 2000.
Lua MLA (8ú heag.)Helman, Cecil. Culture, Health, and Illness. 4th ed. Butterworth-Heinemann, 2000.
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