SMITH, R. C. Principles & Practices Of Heavy Construction Ronald C. Smith. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSMITH, Ronald C. Principles & Practices Of Heavy Construction Ronald C. Smith. Prentice-Hall.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSMITH, Ronald C. Principles & Practices Of Heavy Construction Ronald C. Smith. Prentice-Hall.
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