BENNETT, A. B. J., & NELSON, L. T. (2004). Mathematics for elementary teachers: An activity approach.-- ed.6. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)BENNETT, Albert B. Jr, agus L. Ted NELSON. Mathematics for Elementary Teachers: An Activity Approach.-- Ed.6. Boston: McGraw-Hill, 2004.
Lua MLA (9ú heag.)BENNETT, Albert B. Jr, agus L. Ted NELSON. Mathematics for Elementary Teachers: An Activity Approach.-- Ed.6. McGraw-Hill, 2004.
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