(1989). Educational technology research and development: ETR & D. Association for Educational Communications and Technology.
Citazione stile Chigago Style (17a edizione)Educational Technology Research and Development: ETR & D. Washington, D.C.: Association for Educational Communications and Technology, 1989.
Citatione MLA (9a ed.)Educational Technology Research and Development: ETR & D. Association for Educational Communications and Technology, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.