Peuquet, D. J., Marble, D. F., & Marble, D. F. (1990). Introductory readings in geographic information systems. London: Taylor & Francis.
Παραπομπή Chicago StylePeuquet, Donna J., Duane Francis Marble, and Duane Francis Marble. Introductory Readings in Geographic Information Systems. London: Taylor & Francis, 1990.
Παραπομπή MLAPeuquet, Donna J., Duane Francis Marble, and Duane Francis Marble. Introductory Readings in Geographic Information Systems. London: Taylor & Francis, 1990.
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