APA-referens

O'Sullivan, D., & Unwin, D. J. (2003). Geographical information analysis. John Wiley & Sons.

Chicago-stil citat

O'Sullivan, David, och David J. Unwin. Geographical Information Analysis. New Jersey: John Wiley & Sons, 2003.

MLA-referens

O'Sullivan, David, och David J. Unwin. Geographical Information Analysis. John Wiley & Sons, 2003.