APA aipamena

Allen, D. W. (2011). GIS tutorial 3: Advanced workbook. ESRI Press.

Chicago Style aipamena

Allen, David W. GIS Tutorial 3: Advanced Workbook. Redlands, Calif: ESRI Press, 2011.

MLA aipamena

Allen, David W. GIS Tutorial 3: Advanced Workbook. ESRI Press, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.