Gaya APA

Nagda, A, W., Bickel, C. (2004). Polar Bear Math: Learning About Fractions from Klondike and Snow . : Henry Holt and Co. (BYR).

Gaya MLA

Nagda, Ann, Whitehead., Bickel, Cindy. "Polar Bear Math: Learning About Fractions from Klondike and Snow". : Henry Holt and Co. (BYR), 2004. Text.