Callahan, M. T. (1992). Construction Project Scheduling Michael T. Callahan, Daniel G. Quackenbush, James E. Rowings. Irwin/McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCallahan, Michael T. Construction Project Scheduling Michael T. Callahan, Daniel G. Quackenbush, James E. Rowings. Irwin/McGraw-Hill, 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCallahan, Michael T. Construction Project Scheduling Michael T. Callahan, Daniel G. Quackenbush, James E. Rowings. Irwin/McGraw-Hill, 1992.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.