The Nature of work : advances in psychological theory, methods, and practice
edited by Kevin Ford, John R. Hollenbeck, Ann Marie Ryan
American Psychological Association,
 Buku Teks SO
Hulin, Charles L.
Item response theory : application to psychological measurement
Dow Jones-Irwin, 1983
 Buku Teks
Mixing methods in psychology : the integration of qualitative and quantitative methods in theory and practice
edited by Zazie Todd, Brigitte Nerlich, Suzanne McKeown and David D. Clarke
Psychology Press, 2004
 Buku Teks
Cohen, Ronald Jay
Psychological testing and assessment : an introduction to tests and measurement
McGraw-Hill, 2005
 Buku Teks
Psychological assessment
American Psychological Association, 1997
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