Tohutoro APA (7th ed.)

ebrary, Inc, & Dawsen, C. J. (2011). Geographic information systems. Nova Science Publishers.

Tohutoru Kātū Chicago (17th ed.)

ebrary, Inc, me Christopher J. Dawsen. Geographic Information Systems. New York: Nova Science Publishers, 2011.

Tohutoro MLA (9th ed.)

ebrary, Inc, me Christopher J. Dawsen. Geographic Information Systems. Nova Science Publishers, 2011.