Chatfield, C. (1994). Problem solving: A statistician`s guide. London: Chapman and Hall.
Παραπομπή Chicago StyleChatfield, Christopher. Problem Solving: A Statistician`s Guide. London: Chapman and Hall, 1994.
Παραπομπή MLAChatfield, Christopher. Problem Solving: A Statistician`s Guide. London: Chapman and Hall, 1994.
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