Construction Institute & American Society of Civil Engineers. Committee on Specifications. (2008). Preparing requests for proposals and specifications for design-build projects. American Society of Civil Engineers. https://doi.org/10.1061/9780784409879
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रConstruction Institute और American Society of Civil Engineers. Committee on Specifications. Preparing Requests for Proposals and Specifications for Design-build Projects. Reston, Virginia: American Society of Civil Engineers, 2008. https://doi.org/10.1061/9780784409879.
एमएलए (9वां संस्करण) प्रशस्ति पत्रConstruction Institute और American Society of Civil Engineers. Committee on Specifications. Preparing Requests for Proposals and Specifications for Design-build Projects. American Society of Civil Engineers, 2008. https://doi.org/10.1061/9780784409879.