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 Dale L. Johnson
 
 Mebane, Donata; Johnson, Dale L. (1970): A comparison of the performance of mexican boys and girls on witkin's cognitive tasks [A comparison of the performance of mexican boys and girls on witkin's cognitive tasks]. R. interam. Psicol. 4(3-4), 227-239 (eng.). 
 
 Johnson, Dale L.; Johnson, Carmen A.; Price-Williams, Douglass (1967): The draw-a-man test and raven progressive matrices performance of guatemalan boys and ladino children [The draw-a-man test and raven progressive matrices performance of guatemalan boys and ladino children]. R. interam. Psicol. 1(2), 143-157 (eng.).