APA Style

Demers, M, N. (1997). Fundamentals Of Geograhic Iformation Sytems (cet. 1). New Ma: John Wiley &Sons Inc.

MLA Style

Demers, Michael, N.. "Fundamentals Of Geograhic Iformation Sytems". cet. 1 New Ma: John Wiley &Sons Inc, 1997. Text.