Grimshaw, D. J. (1994). Bringing geographical information systems into business. Cambridge: Geoinformation International.
Παραπομπή Chicago StyleGrimshaw, David J. Bringing Geographical Information Systems Into Business. Cambridge: Geoinformation International, 1994.
Παραπομπή MLAGrimshaw, David J. Bringing Geographical Information Systems Into Business. Cambridge: Geoinformation International, 1994.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.