Dalrymple-Alford, I. J. (1979). A school-based study of the learning and understanding of ratio/ proportionality by pupils of average mathematical ability at 10+, 12-13 and 15-16.
Chicago Style (17th ed.) CitationDalrymple-Alford, Ian James. A School-based Study of the Learning and Understanding of Ratio/ Proportionality by Pupils of Average Mathematical Ability at 10+, 12-13 and 15-16. 1979.
MLA (8th ed.) CitationDalrymple-Alford, Ian James. A School-based Study of the Learning and Understanding of Ratio/ Proportionality by Pupils of Average Mathematical Ability at 10+, 12-13 and 15-16. 1979.
Warning: These citations may not always be 100% accurate.