APA (7th ed.) Zitazioa
Singh, G. (1974). Text book of water supply and sanitary engineering. Standard Pub..
Chicago Style (17th ed.) Zitazioa
Singh, Gurcharan. Text Book of Water Supply and Sanitary Engineering. Delhi: Standard Pub., 1974.
MLA (9th ed.) Zitazioa
Singh, Gurcharan. Text Book of Water Supply and Sanitary Engineering. Standard Pub., 1974.
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