Davis, I. C. (1961). Teacher's manual and answer book to accompany Science: Discovery and progress. Holt, Rinehart and Winston.
Παραπομπή σε μορφή Chicago (17η εκδ.)Davis, Ira C. Teacher's Manual and Answer Book to Accompany Science: Discovery and Progress. New York: Holt, Rinehart and Winston, 1961.
Παραπομπή σε μορφή MLA (8th εκδ.)Davis, Ira C. Teacher's Manual and Answer Book to Accompany Science: Discovery and Progress. Holt, Rinehart and Winston, 1961.
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