Gaya APA

...[et.al.]., A, B. (1983). Guiding each child`s learning of mathematics : a diagnostic approach to instruction . Columbus: Charles E.Merrill Publishing.

Gaya MLA

...[et.al.]., Ashlock,Robert, B.. "Guiding each child`s learning of mathematics : a diagnostic approach to instruction". Columbus: Charles E.Merrill Publishing, 1983. Text.