APA (7 वां संस्करण) प्रशस्ति पत्र
Singh, P. (2013). A textbook of engineering and general geology (8th rev ed.). S.K.Kataria & Sons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Singh, Prabin. A Textbook of Engineering and General Geology. 8th rev ed. New Delhi: S.K.Kataria & Sons, 2013.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Singh, Prabin. A Textbook of Engineering and General Geology. 8th rev ed. S.K.Kataria & Sons, 2013.
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