3Levitt, E. R. , Parker, H.W. , Samuelson, N.M. Improving Construction Safety Performance: The User's role[M]. Stanford, Cal: Stanford University. 1981.
4Samelson, Nancy M. , Raymond E. Levitt. Owners' Guidelines for Selecting Safe Contractors [J].ASCE Journal of the Con- struction Division, 1982,108(4) : 617 - 623.
5Samelson, Nancy M. , Raymond E. Levitt, et al. The role of owners in reducing construction accident eosts[A]. Project Management Institute/INTERNET Joint Annual Symposium[C]. Boston, MA, September 1981:194 -200.
6Ellen Leopold, Simon Leonard. Costs of construction accidents to employers[J]. Journal of Occupational Accidents, 1987, 8(8): 273-294.
7Levitt, Raymond E. , Henry W. Parker. Reducing construction accidents-top management's role[J]. ASCE Journal of the Construction Division, 1976,102(3) :465 - 478.
8Lanfer, A. Construction accident cost and management safety motivation [J].Journal of Occupational Accidents, 1987, 4(8) :295 -315.
9A. Laufer. Construction safety: Economics, information and management involvement [J]. Construction Management and Economics, 1987, 5(1) :73-90.
