Forthofer, Ron R.
Public program analysis: a new categorical data approach
Lifetime Learning, 1981
 Buku Teks
New developments in categorical data analysis for the social and behavioral sciences
edited by L. Andries van der Ark
Lawrence Erlbaum Associates, 2005
 Buku Teks
Fienberg, Stephen E.
The analysis of cross-classified categorical data
Massachusett Institute of Technology, 1980
 Buku Teks
PR.L.A.-style:Promoting the new central library Robert G Reagen
 Artikel Jurnal
Agresti, Alan
Analysis of ordinal categorical data / Alan Agresti
John Wiley & Sons, 1984
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