1. Preventing falls through skylights and roof openings;Bobick;Professional Safety,1994
2. Bradee, R., Hause, M., & Pratt, S. (2000). Worker deaths by falls—a summary of surveillance findings and investigative case reports (Publication No. 2000-116). Cincinnati, OH: National Institute for Occupational Health and Safety (NIOSH).
3. Building a better future;Caldwell;Occupational Safety and Healt,1999
4. Nonfatal occupational fall injuries in the West Virginia construction industry;Cattledge;Accident Analysis and Prevention,1996
5. Work-related fatal injury risk of construction worker by occupation and cause of death;Chen;Human and Ecological Risk Assesment,1998