Koch, J. (2002). Science methods book for elementary school teachers. Boston: Houghton Mifflin.
Čikaški stil citiranjaKoch, Janice. Science Methods Book for Elementary School Teachers. Boston: Houghton Mifflin, 2002.
MLA način citiranjaKoch, Janice. Science Methods Book for Elementary School Teachers. Boston: Houghton Mifflin, 2002.
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