Longley, P., Goodchild, M. F., Maguire, D. J., & Rhind, D. (2015). Geographic information science & systems (Fourth edition.). Wiley.
Lua i Stíl Chicago (17ú heag.)Longley, Paul, Michael F. Goodchild, D. J. Maguire, agus David Rhind. Geographic Information Science & Systems. Fourth edition. Hoboken, NJ: Wiley, 2015.
Lua MLA (9ú heag.)Longley, Paul, et al. Geographic Information Science & Systems. Fourth edition. Wiley, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
