Tuttle, Jr. LE. The Comparative Effect on Intelligence Test Scores of Negro and Caucasian Children when Certain Verbal and Time Factors are Varied by use of the WISC, PPVT, and CMMS. fjer [Internet]. 1966 Nov. 11 [cited 2024 Dec. 7];8(1):49-61. Available from: https://journals.flvc.org/fjer/article/view/133987