Gaya APA
Antenucci, J, C. et al (1991).
Geographic Information System: A Guide to Technology .
United States of America:
VAN NOSTRAND REINHOLD.
Gaya MLA
Antenucci, John, C.. et al.
"Geographic Information System: A Guide to Technology".
United States of America:
VAN NOSTRAND REINHOLD,
1991.
Text.