Gaya APA

O'rourke, N. (2013). A Step by Step Approach to Using SAS for Factor Analysis and Structural Equation Modelling : 2 ed (2). USA: SAS Institute Inc.

Gaya MLA

O'rourke, Norm. "A Step by Step Approach to Using SAS for Factor Analysis and Structural Equation Modelling : 2 ed". 2 USA: SAS Institute Inc, 2013. MPK.