APA Style
Gorr, W, L., Kurland, K, S.
(2011).
GIS tutorial 1 : basic workbook
.
Redlands, Calif:
ESRI Press.
MLA Style
Gorr, Wilpen, L., Kurland, Kristen, Seamens.
"GIS tutorial 1 : basic workbook".
Redlands, Calif:
ESRI Press,
2011.
Computer File.