1. Dickie D. E. (1991). “Who's responsible? Guidelines for mobile crane operations.” Lift Equipment Feb.March 27–29.
2. Harris F. (1989). Modern construction equipment and methods . Longman Scientific and Technical Harlow Essex U.K.
3. Prebid and Preconstruction Planning Process
4. Nunnally S. W. (1993). Construction methods and management 3rd Ed. Regents/Prentice Hall Englewood Cliffs N.J.
5. Peurifoy R. L. and Ledbetter W. B. (1985). Construction planning equipment and methods 4th Ed. McGraw-Hill New York N.Y.