BushD. F., & CowardR. T.Sex differences in the solution of achromatic and chromatic embedded figures test. Perceptual and Motor Skills, 1974, 39, 1121–1122.
2.
WitkinH. A.OltmanP. K.RaskinE., & KarpS. A.A manual for the Embedded-figures Test.Palo Alto: Consulting Psychologists Press, 1971.