APA (7 वां संस्करण) प्रशस्ति पत्र
Davis, T. (2008). Geotechnical testing, observation, and documentation (2nd ed.). American Society of Civil Engineers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Davis, Tim. Geotechnical Testing, Observation, and Documentation. 2nd ed. Reston, VA: American Society of Civil Engineers, 2008.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Davis, Tim. Geotechnical Testing, Observation, and Documentation. 2nd ed. American Society of Civil Engineers, 2008.
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