(1957). How to increase number fact speed, accuracy, and comprehension with addition & subtraction generalizations / [by Gilbert S. Macvaugh, Jr., and G. S. Macvaugh].
Παραπομπή σε μορφή Chicago (17η εκδ.)How to Increase Number Fact Speed, Accuracy, and Comprehension with Addition & Subtraction Generalizations / [by Gilbert S. Macvaugh, Jr., and G. S. Macvaugh]. 1957.
Παραπομπή σε μορφή MLA (9th εκδ.)How to Increase Number Fact Speed, Accuracy, and Comprehension with Addition & Subtraction Generalizations / [by Gilbert S. Macvaugh, Jr., and G. S. Macvaugh]. 1957.
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