(1990). Differential aptitude tests (5th ed.). U.S.A.: Psychological Corporation.
Chicago Style CitationDifferential Aptitude Tests. 5th ed. U.S.A.: Psychological Corporation, 1990.
MLA CitationDifferential Aptitude Tests. 5th ed. U.S.A.: Psychological Corporation, 1990.
Warning: These citations may not always be 100% accurate.