Erdman, R. L. (1961). Educable retarded children in elementary schools. Council for Exceptional Children, NEA.
Цитирование в стиле Чикаго (17-е изд.)Erdman, Robert Lee. Educable Retarded Children in Elementary Schools. [Washington: Council for Exceptional Children, NEA, 1961.
Цитирование MLA (9-е изд.)Erdman, Robert Lee. Educable Retarded Children in Elementary Schools. Council for Exceptional Children, NEA, 1961.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.