APA-viite (7. p.)

Ashlock, R. B. (1983). Guiding each child's learning of mathematics: A diagnostic approach to instruction. C.E. Merrill Pub. Co.

Chicago-viite (17. p.)

Ashlock, Robert B. Guiding Each Child's Learning of Mathematics: A Diagnostic Approach to Instruction. Columbus, Ohio: C.E. Merrill Pub. Co, 1983.

MLA-viite (9. p.)

Ashlock, Robert B. Guiding Each Child's Learning of Mathematics: A Diagnostic Approach to Instruction. C.E. Merrill Pub. Co, 1983.