(1993). Experimental design and methods. Sage.
Chicago Style (17. basım) AtıfExperimental Design and Methods. London: Sage, 1993.
MLA (9th ed.) AtıfExperimental Design and Methods. Sage, 1993.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..
(1993). Experimental design and methods. Sage.
Chicago Style (17. basım) AtıfExperimental Design and Methods. London: Sage, 1993.
MLA (9th ed.) AtıfExperimental Design and Methods. Sage, 1993.