Elwood, S. A., Goodchild, M., & Sui, D. (2012). Researching volunteered geographic information: Spatial data, geographic research, and new social practice. Philadelphia, PA: Taylor & Francis Group.
Chicago Style CitationElwood, Sarah A., Michael Goodchild, and Daniel Sui. Researching Volunteered Geographic Information: Spatial Data, Geographic Research, and New Social Practice. Philadelphia, PA: Taylor & Francis Group, 2012.
MLA CitationElwood, Sarah A., Michael Goodchild, and Daniel Sui. Researching Volunteered Geographic Information: Spatial Data, Geographic Research, and New Social Practice. Philadelphia, PA: Taylor & Francis Group, 2012.
Warning: These citations may not always be 100% accurate.