Lawrence, N. J. D. a. I. M. Checking the equivalence of nearly identical test editions. Educational Testing Service.
Chicago (17e ed.) BronvermeldingLawrence, Neil J. Dorans and Ida M. Checking the Equivalence of Nearly Identical Test Editions. Educational Testing Service.
MLA (8e ed.) BronvermeldingLawrence, Neil J. Dorans and Ida M. Checking the Equivalence of Nearly Identical Test Editions. Educational Testing Service.
Let op: Deze citaties zijn niet altijd 100% accuraat.