Barlow, R. (1993). Solar pumping: An introduction and update on the technology, performance, costs, and economics. World Bank.
Chicago-referens (17:e uppl.)Barlow, Roy. Solar Pumping: An Introduction and Update on the Technology, Performance, Costs, and Economics. Washington, D.C: World Bank, 1993.
MLA-referens (9:e uppl.)Barlow, Roy. Solar Pumping: An Introduction and Update on the Technology, Performance, Costs, and Economics. World Bank, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.