Lähteet

Ahlgren, Alli. 1994. Öljyntuotanto Hämeessä - outo idea. Dordrecht: Kluwer Academic Publishers.

Åhlgren, Älli. 1994. Öljyntuotanto Hämeessä. Dordrecht: Kluwer Academic Publishers.

Greenacre, Michael, ja Trevor Hastie. 1987. ”The Geometric Interpretation of Correspondence Analysis”. Journal of the American Statistical Association 82 (398): 437–47. https://doi.org/10.1080/01621459.1987.10478446.

Greenacre, Michael J. 2017. Correspondence analysis in practice. Third edition. Boca Raton, Florida: CRC Press. https://helka.finna.fi/Record/helka.3029760.

Roux, Brigitte Le, ja Henry Rouanet. 2004. Geometric data analysis: from correspondence analysis to structured data analysis. Dordrecht: Kluwer Academic Publishers.