APA-viite (7. p.)
Walford, N. (2011). Practical statistics for geographers and earth scientists. Wiley-Blackwell.
Chicago-viite (17. p.)
Walford, Nigel. Practical Statistics for Geographers and Earth Scientists. Chichester, West Sussex, UK: Wiley-Blackwell, 2011.
MLA-viite (9. p.)
Walford, Nigel. Practical Statistics for Geographers and Earth Scientists. Wiley-Blackwell, 2011.
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