JEKEL, J. F., KATZ, D. L., ELMORE, J. G., & WILD, D. M. G. (2007). Epidemiology, biostatistics, and preventive medicine (Ed.3.). Saunders Elsevier.
Lua i Stíl Chicago (17ú heag.)JEKEL, James F., David L. KATZ, Joann G. ELMORE, agus Dorothea M. G. WILD. Epidemiology, Biostatistics, and Preventive Medicine. Ed.3. Phidelphia: Saunders Elsevier, 2007.
Lua MLA (9ú heag.)JEKEL, James F., et al. Epidemiology, Biostatistics, and Preventive Medicine. Ed.3. Saunders Elsevier, 2007.
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