FAWCETT, H. P., & CUMMINS, K. B. (1970). The teaching of mathematics from counting to calculus. A Bell and Howell co.
Lua i Stíl Chicago (17ú heag.)FAWCETT, Harold P., agus Kenneth B. CUMMINS. The Teaching of Mathematics from Counting to Calculus. Columbus: A Bell and Howell co, 1970.
Lua MLA (9ú heag.)FAWCETT, Harold P., agus Kenneth B. CUMMINS. The Teaching of Mathematics from Counting to Calculus. A Bell and Howell co, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.