APA (7 वां संस्करण) प्रशस्ति पत्र
Gibson, R. (2015). A practical guide to disruption and productivity loss on construction and engineering projects. John Wiley & Sons Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Gibson, Roger. A Practical Guide to Disruption and Productivity Loss on Construction and Engineering Projects. West Sussex, England: John Wiley & Sons Inc., 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Gibson, Roger. A Practical Guide to Disruption and Productivity Loss on Construction and Engineering Projects. John Wiley & Sons Inc., 2015.
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