Clifford, N., French, S., & Valentine, G. (2010). Key methods in Geography (2a. ed.). Sage.
Chicagoスタイル(17版)引用形式Clifford, Nicholas, Shaun French, , Gill Valentine. Key Methods in Geography. 2a. ed. Los Angeles: Sage, 2010.
MLA(9版)引用形式Clifford, Nicholas, et al. Key Methods in Geography. 2a. ed. Sage, 2010.
警告: この引用は必ずしも正確ではありません.