Hofkes, E. H., & Visscher, J. T. (1986). Renewable energy sources for rural water supply. International Reference Centre for Community Water Supply and Sanitation.
Citazione stile Chigago Style (17a edizione)Hofkes, E. H., e J. T. Visscher. Renewable Energy Sources for Rural Water Supply. The Hague: International Reference Centre for Community Water Supply and Sanitation, 1986.
Citatione MLA (9a ed.)Hofkes, E. H., e J. T. Visscher. Renewable Energy Sources for Rural Water Supply. International Reference Centre for Community Water Supply and Sanitation, 1986.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.