Valentine, G. (2015). Approaches to Human Geography: Philosophies, theories, people and practices (2nd ed.). Sage.
Chicago-viite (17. p.)Valentine, Gill. Approaches to Human Geography: Philosophies, Theories, People and Practices. 2nd ed. New Delhi: Sage, 2015.
MLA-viite (9. p.)Valentine, Gill. Approaches to Human Geography: Philosophies, Theories, People and Practices. 2nd ed. Sage, 2015.
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