Shatkin, L. (1980). Computer-assisted guidance: Descriptions of systems. Educational Testing Service.
Chicago (17e ed.) BronvermeldingShatkin, Laurence. Computer-assisted Guidance: Descriptions of Systems. Princeton, New Jersey: Educational Testing Service, 1980.
MLA (9e ed.) BronvermeldingShatkin, Laurence. Computer-assisted Guidance: Descriptions of Systems. Educational Testing Service, 1980.
Let op: Deze citaties zijn niet altijd 100% accuraat.