Παραπομπή APA

Clarke, G. 1., Longley, P., & Clarke, G. (1995). GIS for business and service planning. Cambridge: GeoInformation International.

Παραπομπή Chicago Style

Clarke, Graham 1960-, Paul Longley, and Graham Clarke. GIS for Business and Service Planning. Cambridge: GeoInformation International, 1995.

Παραπομπή MLA

Clarke, Graham 1960-, Paul Longley, and Graham Clarke. GIS for Business and Service Planning. Cambridge: GeoInformation International, 1995.

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