Gaya APA
DeMers, Michael N. (2009).
Fundamentals of geographic information systems (4).
USA:
John Wiley & Sons, Inc.
Gaya Chicago
DeMers, Michael N.
Fundamentals of geographic information systems.
4
USA:
John Wiley & Sons, Inc,
2009.
Electronic Resource.
Gaya MLA
DeMers, Michael N.
Fundamentals of geographic information systems.
4
USA:
John Wiley & Sons, Inc,
2009.
Electronic Resource.
Gaya Turabian
DeMers, Michael N.
Fundamentals of geographic information systems.
4
USA:
John Wiley & Sons, Inc,
2009.
Electronic Resource.