Wray, W. K. (1986). Measuring Engineering Properties of Soil. Prentice-Hall of India.
Čikaški stil citiranjaWray, Warren K. Measuring Engineering Properties of Soil. Englewood: Prentice-Hall of India, 1986.
MLA način citiranjaWray, Warren K. Measuring Engineering Properties of Soil. Prentice-Hall of India, 1986.
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