Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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