Lua APA (7ú heag.)
Steinberg, S. L., & Steinberg, S. J. (2015). GIS research methods: Incorporating spatial perspectives (First edition.). Esri Press.
Lua i Stíl Chicago (17ú heag.)
Steinberg, Sheila L., agus Steven J. Steinberg. GIS Research Methods: Incorporating Spatial Perspectives. First edition. Redlands, Califronia: Esri Press, 2015.
Lua MLA (9ú heag.)
Steinberg, Sheila L., agus Steven J. Steinberg. GIS Research Methods: Incorporating Spatial Perspectives. First edition. Esri Press, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.