Style de citation APA

Ian Douglas, Chris Perkins, & Richard Huggett. (2007). Companion encyclopaedia of geography from local to global (v.1) (2nd.). Routledge.

Style de citation Chicago

Ian Douglas, Chris Perkins, et Richard Huggett. Companion Encyclopaedia of Geography from Local to Global (v.1). 2nd. London: Routledge, 2007.

Style de citation MLA

Ian Douglas, et al. Companion Encyclopaedia of Geography from Local to Global (v.1). 2nd. Routledge, 2007.