APA (7 वां संस्करण) प्रशस्ति पत्र
Raj, P. P. (2008). Soil mechanics and foundation engineering. Pearson Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Raj, P. Purushothama. Soil Mechanics and Foundation Engineering. New Delhi: Pearson Education, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Raj, P. Purushothama. Soil Mechanics and Foundation Engineering. Pearson Education, 2008.
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