Citazione Stile APA (7a Edizione)

SAGE Knowledge (Online service), Hubbard, P., Kitchin, R., & Valentine, G. (2008). Key texts in human geography. SAGE.

Citazione stile Chigago Style (17a edizione)

SAGE Knowledge (Online service), Phil Hubbard, Rob Kitchin, e Gill Valentine. Key Texts in Human Geography. Los Angeles, [Calif.], London: SAGE, 2008.

Citatione MLA (9a ed.)

SAGE Knowledge (Online service), et al. Key Texts in Human Geography. SAGE, 2008.