APA (7 वां संस्करण) प्रशस्ति पत्र
Robbins, D. M., & Ligon, G. C. (2014). How to design wastewater systems for local conditions in developing countries. IWA Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Robbins, David M., और Grant C. Ligon. How to Design Wastewater Systems for Local Conditions in Developing Countries. London, [England]: IWA Publishing, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Robbins, David M., और Grant C. Ligon. How to Design Wastewater Systems for Local Conditions in Developing Countries. IWA Publishing, 2014.
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