Everitt, B. (2011). Cluster analysis (5th ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)Everitt, Brian. Cluster Analysis. 5th ed. Chichester, West Sussex, U.K: Wiley, 2011.
Lua MLA (9ú heag.)Everitt, Brian. Cluster Analysis. 5th ed. Wiley, 2011.
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