APA (7 वां संस्करण) प्रशस्ति पत्र
Wyllie, D. C. (2018). Rock Slope Engineering: Civil Applications (5th edition.). CRS Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Wyllie, Duncan C. Rock Slope Engineering: Civil Applications. 5th edition. Boca Raton: CRS Press, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Wyllie, Duncan C. Rock Slope Engineering: Civil Applications. 5th edition. CRS Press, 2018.
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