EGIS Brüssel. (1991). EGIS '91: 2. European Conference on Geographical Information Systems ; Brussels, Belgium, April 2 - 5, 1991 ; proceedings. EGIS Foundation.
Chicago Style (17th ed.) CitationEGIS Brüssel. EGIS '91: 2. European Conference on Geographical Information Systems ; Brussels, Belgium, April 2 - 5, 1991 ; Proceedings. Utrecht: EGIS Foundation, 1991.
MLA (9th ed.) CitationEGIS Brüssel. EGIS '91: 2. European Conference on Geographical Information Systems ; Brussels, Belgium, April 2 - 5, 1991 ; Proceedings. EGIS Foundation, 1991.
Warning: These citations may not always be 100% accurate.