Kaiser, H. F.Computer programs for varimax rotation in factor analysis. EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT, 1959, 19,413-420.
2.
Michael, W. B., Michael, J. J., and Zimmerman, W. S.Study Attitudes and Methods Survey, (Experimental Form. San Diego: Educational and Industrial Testing Service , 1969.
3.
Zimmerman, W. S., Michael, J. J., and Michael, W. B.The factored dimensions of the study attitudes and methods survey test— experimental form. EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT , 1970, 30, 433-436.