Johnson, P.O., & Neyman, J. (1936). Tests of certain linear hypotheses and their applications to some educational problems. Statistical Research Memoirs , 1, 57-93.
2.
Kerlinger, F.N., & Pedhazur, E.J. (1973). Multiple regression in behavioral research. New York: Holt, Rinehart & Winston.
3.
Lautenschlager, G.J., & Mendoza, J.L. (1986). A step-down hierarchical regression analysis for examining hypotheses about test bias in prediction. Applied Psychological Measurement, 10, 133-139.
4.
Rogosa, D. (1980). Comparing nonparallel regression lines. Psychological Bulletin,88, 307-321.
