Marks, J. L. (1975). Teaching elementary school mathematics for understanding (4th ed.). McGraw-Hill.
Čikaški stil citiranja (17. izdanje)Marks, John L. Teaching Elementary School Mathematics for Understanding. 4th ed. New York: McGraw-Hill, 1975.
MLA način citiranja (9. izdanje)Marks, John L. Teaching Elementary School Mathematics for Understanding. 4th ed. McGraw-Hill, 1975.
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