Gurcharan singh. (2007). Water supply and senitary Engineering. Nem Chand Jain.
Citazione stile Chigago Style (17a edizione)Gurcharan singh. Water Supply and Senitary Engineering. New Delhi: Nem Chand Jain, 2007.
Citatione MLA (9a ed.)Gurcharan singh. Water Supply and Senitary Engineering. Nem Chand Jain, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.