Ashlock, R. B. (1983). Guiding each child's learning of mathematics: A diagnostic approach to instruction. C.E. Merrill Pub. Co.
Chicago-Zitierstil (17. Ausg.)Ashlock, Robert B. Guiding Each Child's Learning of Mathematics: A Diagnostic Approach to Instruction. Columbus, Ohio: C.E. Merrill Pub. Co, 1983.
MLA-Zitierstil (9. Ausg.)Ashlock, Robert B. Guiding Each Child's Learning of Mathematics: A Diagnostic Approach to Instruction. C.E. Merrill Pub. Co, 1983.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.