Dubisch, R. (1963). The teaching of mathematics: From intermediate algebra thorugh first year calculus. Wiley.
Dyfyniad Arddull ChicagoDubisch, Roy. The Teaching of Mathematics: From Intermediate Algebra Thorugh First Year Calculus. New York: Wiley, 1963.
Dyfyniad MLADubisch, Roy. The Teaching of Mathematics: From Intermediate Algebra Thorugh First Year Calculus. Wiley, 1963.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.