Παραπομπή APA

Onsrud, H. J. (2007). Research and theory in advancing spatial data infrastructure concepts. Redlands, CA: ESRI Press.

Παραπομπή Chicago Style

Onsrud, Harlan Joseph. Research and Theory in Advancing Spatial Data Infrastructure Concepts. Redlands, CA: ESRI Press, 2007.

Παραπομπή MLA

Onsrud, Harlan Joseph. Research and Theory in Advancing Spatial Data Infrastructure Concepts. Redlands, CA: ESRI Press, 2007.

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