APA (7 वां संस्करण) प्रशस्ति पत्र
Robertson, C. (2003). Safety, Nutrition, and health in early education (2nd ed.). Delmar Thomson learning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Robertson, Cathie. Safety, Nutrition, and Health in Early Education. 2nd ed. Clifton Park, NY: Delmar Thomson learning, 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Robertson, Cathie. Safety, Nutrition, and Health in Early Education. 2nd ed. Delmar Thomson learning, 2003.
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