APA ציטוט

Demers, M. N. (2009). Fundamentals of Geographic Information Systems (4.).

Chicago Edition Citation

Demers, Michael N. Fundamentals of Geographic Information Systems. 4. NewYork, JhonWiley & Sons, 2009.

ציטוט MLA

Demers, Michael N. Fundamentals of Geographic Information Systems. 4. 2009.