George, D., & Mallery, P. (2022). IBM SPSS Statistics 27 Step by Step: A Simple Guide and Reference (17e.). Routledge.
芝加哥风格引文George, Darren, 与 Paul Mallery. IBM SPSS Statistics 27 Step by Step: A Simple Guide and Reference. 17e. India: Routledge, 2022.
MLA引文George, Darren, 与 Paul Mallery. IBM SPSS Statistics 27 Step by Step: A Simple Guide and Reference. 17e. Routledge, 2022.
警告：这些引文格式不一定是100％准确.