(1970). Index to computer assisted instruction / Edited by Helen A. Lekan.
Chicago Style (17th ed.) CitationIndex to Computer Assisted Instruction / Edited by Helen A. Lekan. 1970.
MLA (9th ed.) CitationIndex to Computer Assisted Instruction / Edited by Helen A. Lekan. 1970.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.