(1989). Educational technology research and development: ETR & D. Association for Educational Communications and Technology.
Цитирование в стиле Чикаго (17-е изд.)Educational Technology Research and Development: ETR & D. Washington, D.C.: Association for Educational Communications and Technology, 1989.
Цитирование MLA (9-е изд.)Educational Technology Research and Development: ETR & D. Association for Educational Communications and Technology, 1989.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.