Lua APA (7ú heag.)
Wang, J., Xie, H., & Fischer, J. H. (2012). Multilevel models: Applications using SAS. De Gruyter ; Higher Education Press.
Lua i Stíl Chicago (17ú heag.)
Wang, Jichuan, Haiyi Xie, agus James H. Fischer. Multilevel Models: Applications Using SAS. Berlin : Boston: De Gruyter ; Higher Education Press, 2012.
Lua MLA (9ú heag.)
Wang, Jichuan, et al. Multilevel Models: Applications Using SAS. De Gruyter ; Higher Education Press, 2012.
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