Houlsby, G., Wroth, C., & Eisenstein, Z. (1983). Direct solution of plasticity problems in soils by the method of characteristics. Balkema.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHoulsby, G., C. Wroth, और Z. Eisenstein. Direct Solution of Plasticity Problems in Soils by the Method of Characteristics. Balkema, 1983.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHoulsby, G., et al. Direct Solution of Plasticity Problems in Soils by the Method of Characteristics. Balkema, 1983.
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