(1989). Validating the Concrete to Abstract Instructional Sequence for Teaching Place Value to Learning Disabled Students. Monograph #20 Susan K. Peterson and Others. [microform].
Цитирование в стиле Чикаго (17-е изд.)Validating the Concrete to Abstract Instructional Sequence for Teaching Place Value to Learning Disabled Students. Monograph #20 Susan K. Peterson and Others. [microform]. 1989.
Цитирование MLA (9-е изд.)Validating the Concrete to Abstract Instructional Sequence for Teaching Place Value to Learning Disabled Students. Monograph #20 Susan K. Peterson and Others. [microform]. 1989.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.