Barlow, P. M. (2002). Concepts for national assessment of water availability and use. US Geological Survey circular 1223.
Chicago Style citaatBarlow, Paul M. "Concepts for National Assessment of Water Availability and Use." US Geological Survey Circular 1223 2002.
MLA citatieBarlow, Paul M. "Concepts for National Assessment of Water Availability and Use." US Geological Survey Circular 1223 2002.
Let op: Deze citaties zijn niet altijd 100% accuraat.