Παραπομπή APA

Johnson, L. E. (2009). Geographic information system in water resources engineering. CRC Press.

Παραπομπή Chicago Style

Johnson, Lynn E. Geographic Information System in Water Resources Engineering. Boca Raton: CRC Press, 2009.

Παραπομπή MLA

Johnson, Lynn E. Geographic Information System in Water Resources Engineering. CRC Press, 2009.