(1976). Directions in safety: A selection of safety readings for the student and the practitioner and for the teacher and the safety professional. Thomas.
Chicago-Zitierstil (17. Ausg.)Directions in Safety: A Selection of Safety Readings for the Student and the Practitioner and for the Teacher and the Safety Professional. Springfield/Ill: Thomas, 1976.
MLA-Zitierstil (9. Ausg.)Directions in Safety: A Selection of Safety Readings for the Student and the Practitioner and for the Teacher and the Safety Professional. Thomas, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.