Holdzkom, D., & Lutz, P. B. (1984). Research within reach: Science education : a research-guided responseon the concerns of educators. Research and Development Interpretation Service Appalachia Educational Laboratory.
Παραπομπή σε μορφή Chicago (17η εκδ.)Holdzkom, David, και Pamela B. Lutz. Research Within Reach: Science Education : A Research-guided Responseon the Concerns of Educators. Charleston: Research and Development Interpretation Service Appalachia Educational Laboratory, 1984.
Παραπομπή σε μορφή MLA (9th εκδ.)Holdzkom, David, και Pamela B. Lutz. Research Within Reach: Science Education : A Research-guided Responseon the Concerns of Educators. Research and Development Interpretation Service Appalachia Educational Laboratory, 1984.
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