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Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Joint European Conference & Exhibition on Geographical Information Barcelona, Spain, Henk F. L. Ottens, R. McMillan, và M. Rumor. Geographical Information: From Research to Application Through Cooperation : Second Joint European Conference & Exhibition on Geographical Information, Barcelona, Spain, 1996. Amsterdam ; Washington, DC : Tokyo: IOS Press ; Ohmsha, 1996.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Joint European Conference & Exhibition on Geographical Information Barcelona, Spain, et al. Geographical Information: From Research to Application Through Cooperation : Second Joint European Conference & Exhibition on Geographical Information, Barcelona, Spain, 1996. IOS Press ; Ohmsha, 1996.