PYBUS, R. (1996). Safety Management: Strategy And Practice. Butterworth-Heinemann.
Chicago-viite (17. p.)PYBUS, Roger. Safety Management: Strategy And Practice. Butterworth-Heinemann, 1996.
MLA-viite (8. p.)PYBUS, Roger. Safety Management: Strategy And Practice. Butterworth-Heinemann, 1996.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.