Robertson, C. (2003). Safety, Nutrition, and health in early education (2nd ed.). Delmar Thomson learning.
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Chicago Style (17th ed.) Zitazioa
Robertson, Cathie. Safety, Nutrition, and Health in Early Education. 2nd ed. Clifton Park, NY: Delmar Thomson learning, 2003.
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MLA (9th ed.) Zitazioa
Robertson, Cathie. Safety, Nutrition, and Health in Early Education. 2nd ed. Delmar Thomson learning, 2003.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.