APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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