Isabelle, A. D., & Zinn, G. A. (2017). STEPS to STEM: A Science Curriculum Supplement for Upper Elementary and Middle School Grades – Teacher’s Edition. SensePublishers : Imprint: SensePublishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Isabelle, Aaron D., και Gilbert A. Zinn. STEPS to STEM: A Science Curriculum Supplement for Upper Elementary and Middle School Grades – Teacher’s Edition. Rotterdam: SensePublishers : Imprint: SensePublishers, 2017.
Παραπομπή σε μορφή MLA (8th εκδ.)Isabelle, Aaron D., και Gilbert A. Zinn. STEPS to STEM: A Science Curriculum Supplement for Upper Elementary and Middle School Grades – Teacher’s Edition. SensePublishers : Imprint: SensePublishers, 2017.
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