ebrary, Inc. (2000). Safe work in the 21st century: Education and training needs for the next decade's occupational safety and health personnel. National Academy Press.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)ebrary, Inc. Safe Work in the 21st Century: Education and Training Needs for the Next Decade's Occupational Safety and Health Personnel. Washington, DC: National Academy Press, 2000.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)ebrary, Inc. Safe Work in the 21st Century: Education and Training Needs for the Next Decade's Occupational Safety and Health Personnel. National Academy Press, 2000.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.