Bennett, A. B., & Nelson, L. T. (1998). Mathematics for elementary teachers: A conceptual approach (4th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Bennett, Albert B., agus Leonard T. Nelson. Mathematics for Elementary Teachers: A Conceptual Approach. 4th ed. Boston, Mass.: McGraw-Hill, 1998.
Lua MLA (8ú heag.)Bennett, Albert B., agus Leonard T. Nelson. Mathematics for Elementary Teachers: A Conceptual Approach. 4th ed. McGraw-Hill, 1998.
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