Ekeblad, E. (1996). Children, learning, numbers: A phenomenographic excursion into first-grade children's arithmetic. Acta Universitatis Gothoburgensis.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEkeblad, Eva. Children, Learning, Numbers: A Phenomenographic Excursion into First-grade Children's Arithmetic. Göteborg, Sweden: Acta Universitatis Gothoburgensis, 1996.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEkeblad, Eva. Children, Learning, Numbers: A Phenomenographic Excursion into First-grade Children's Arithmetic. Acta Universitatis Gothoburgensis, 1996.
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