World Health Organization. Regional Office for the Eastern Mediterranean & ebrary, Inc. (2009). A practical guide to developing and implementing school policy on diet and physical activity. World Health Organization, Regional Office for the Eastern Mediterranean.
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Chicago Style (17th ed.) Zitazioa
World Health Organization. Regional Office for the Eastern Mediterranean eta Inc ebrary. A Practical Guide to Developing and Implementing School Policy on Diet and Physical Activity. Geneva: World Health Organization, Regional Office for the Eastern Mediterranean, 2009.
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MLA (9th ed.) Zitazioa
World Health Organization. Regional Office for the Eastern Mediterranean eta Inc ebrary. A Practical Guide to Developing and Implementing School Policy on Diet and Physical Activity. World Health Organization, Regional Office for the Eastern Mediterranean, 2009.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.