DiTrapani J, Rockwood N, Jeon M. Explanatory IRT analysis using the SPIRT macro in SPSS. TQMP. 2018;14(2):81-98. doi: 10.20982/tqmp.14.2.p081
DePyssler B, Williams VSL, Windle M. Alcohol consumption and positive study practices among African American college students. J Alcohol Drug Educ. 2005 Dec 1;49(4):26-44.