Citação norma APA

(1989). Educational technology research and development: ETR & D. Association for Educational Communications and Technology.

Citação norma Chicago

Educational Technology Research and Development: ETR & D. Washington, D.C.: Association for Educational Communications and Technology, 1989.

Citação norma MLA

Educational Technology Research and Development: ETR & D. Association for Educational Communications and Technology, 1989.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.