Cita APA (7a ed.)

Elwood, S. A., Goodchild, M., & Sui, D. (2012). Researching volunteered geographic information: Spatial data, geographic research, and new social practice. Taylor & Francis Group.

Cita Chicago Style (17a ed.)

Elwood, Sarah A., Michael Goodchild, y Daniel Sui. Researching Volunteered Geographic Information: Spatial Data, Geographic Research, and New Social Practice. Philadelphia, PA: Taylor & Francis Group, 2012.

Cita MLA (9a ed.)

Elwood, Sarah A., et al. Researching Volunteered Geographic Information: Spatial Data, Geographic Research, and New Social Practice. Taylor & Francis Group, 2012.