एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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