Howard, G. B. (2002). Healthy villages: A guide for communities and comunity health workers. World Health Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)Howard, Guy Bogh. Healthy Villages: A Guide for Communities and Comunity Health Workers. Geneva: World Health Organization, 2002.
Παραπομπή σε μορφή MLA (8th εκδ.)Howard, Guy Bogh. Healthy Villages: A Guide for Communities and Comunity Health Workers. World Health Organization, 2002.
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