Cita APA (7a ed.)

Walford, N. (2011). Practical statistics for geographers and earth scientists. Wiley-Blackwell.

Cita Chicago Style (17a ed.)

Walford, Nigel. Practical Statistics for Geographers and Earth Scientists. Chichester, West Sussex, UK: Wiley-Blackwell, 2011.

Cita MLA (9a ed.)

Walford, Nigel. Practical Statistics for Geographers and Earth Scientists. Wiley-Blackwell, 2011.