Ashlock, R. B. (1983). Guiding each child's learning of mathematics: A diagnostic approach to instruction. C.E. Merrill Pub. Co.
Čikaški stil citiranja (17. izdanje)Ashlock, Robert B. Guiding Each Child's Learning of Mathematics: A Diagnostic Approach to Instruction. Columbus, Ohio: C.E. Merrill Pub. Co, 1983.
MLA način citiranja (9. izdanje)Ashlock, Robert B. Guiding Each Child's Learning of Mathematics: A Diagnostic Approach to Instruction. C.E. Merrill Pub. Co, 1983.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.