Lua APA (7ú heag.)

284964 Bird, M. H. (1991). Mathematics for young children: An active thinking approach. London : Routledge.

Lua i Stíl Chicago (17ú heag.)

284964 Bird, Marion H. Mathematics for Young Children: An Active Thinking Approach. London : Routledge, 1991.

Lua MLA (9ú heag.)

284964 Bird, Marion H. Mathematics for Young Children: An Active Thinking Approach. London : Routledge, 1991.

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