Lua APA (7ú heag.)

Pick, J. B. (2005). Geographic information systems in business. Idea Group Pub.

Lua i Stíl Chicago (17ú heag.)

Pick, James B. Geographic Information Systems in Business. Hershey, Pa: Idea Group Pub, 2005.

Lua MLA (9ú heag.)

Pick, James B. Geographic Information Systems in Business. Idea Group Pub, 2005.

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