Longley, P., Goodchild, M. F., & Maguire, D. J. (2015). Geographic information science & systems (Fourth edition.). Wiley.
Citazione stile Chigago Style (17a edizione)Longley, Paul, Michael F. Goodchild, e D. J. Maguire. Geographic Information Science & Systems. Fourth edition. Hoboken, N. J: Wiley, 2015.
Citatione MLA (9a ed.)Longley, Paul, et al. Geographic Information Science & Systems. Fourth edition. Wiley, 2015.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.