Aitken, S. C., & Valentine, G. (2015). Approaches to human geography: Philosophies, theories, people and practices (Second edition.). SAGE.
Citazione stile Chigago Style (17a edizione)Aitken, Stuart C., e Gill Valentine. Approaches to Human Geography: Philosophies, Theories, People and Practices. Second edition. Los Angeles: SAGE, 2015.
Citatione MLA (9a ed.)Aitken, Stuart C., e Gill Valentine. Approaches to Human Geography: Philosophies, Theories, People and Practices. Second edition. SAGE, 2015.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.