Cita APA (7th ed.)

Clifford, N., French, S., & Valentine, G. (2010). Key methods in Geography (2a. ed.). Sage.

Cita Chicago (17th ed.)

Clifford, Nicholas, Shaun French, i Gill Valentine. Key Methods in Geography. 2a. ed. Los Angeles: Sage, 2010.

Cita MLA (9th ed.)

Clifford, Nicholas, et al. Key Methods in Geography. 2a. ed. Sage, 2010.