Gaya APA

Ashlock, R, B. et al (1983). Guiding Each Child's Learning of Mathematics : A Diagnostic Approach to Instruction . Columbus: Ohio: Charles E. Merril; 1983.

Gaya MLA

Ashlock, Robert, B.. et al. "Guiding Each Child's Learning of Mathematics : A Diagnostic Approach to Instruction". Columbus: Ohio: Charles E. Merril; 1983, 1983. Text.