4S Thomas Ng, Kam Pong Cheng, R Martin Skitmore. A framework for evaluating the safety performance of construction contractors[J]. Building and Environment, 2005,40:1 347- 1 355.
5Marianne Toruer, Anders Pousette. Safety in construction-a comprehensive description of the characteristics of high safety standards in construction work, from the combined perspective of supervisors and experienced workers [J]. Journal of Safety Research,2009,40 : 399 - 409.