APA aipamena

Chrisman, N. R. (1997). Exploring geographic information systems. New York: John Wiley and Sons.

Chicago Style aipamena

Chrisman, Nicholas R. Exploring Geographic Information Systems. New York: John Wiley and Sons, 1997.

MLA aipamena

Chrisman, Nicholas R. Exploring Geographic Information Systems. New York: John Wiley and Sons, 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.