Gaya APA
Alspach, Ted, Murdock, Kelly. (2002).
Introduction to geographic information systems .
New York McGraw Hill:
.
Gaya Chicago
Alspach, Ted, Murdock, Kelly.
Introduction to geographic information systems.
New York McGraw Hill:
,
2002.
Buku Tercetak.
Gaya MLA
Alspach, Ted, Murdock, Kelly.
Introduction to geographic information systems.
New York McGraw Hill:
,
2002.
Buku Tercetak.
Gaya Turabian
Alspach, Ted, Murdock, Kelly.
Introduction to geographic information systems.
New York McGraw Hill:
,
2002.
Buku Tercetak.