APA (7e ed.) Bronvermelding

Clifford, N. J., & Valentine, G. (2010). Key methods in geography (2nd ed.). Sage.

Chicago (17e ed.) Bronvermelding

Clifford, Nicholas J., en Gill Valentine. Key Methods in Geography. 2nd ed. Thousand Oaks, CA: Sage, 2010.

MLA (9e ed.) Bronvermelding

Clifford, Nicholas J., en Gill Valentine. Key Methods in Geography. 2nd ed. Sage, 2010.