Gaya APA

Working safe : how to help people actively care for health and safety / Geller, E. Scott. (2001). : Boca Raton, Fla. : Lewis Publishers.

Gaya MLA

Working safe : how to help people actively care for health and safety / Geller, E. Scott. 2nd ed.. : Boca Raton, Fla. : Lewis Publishers, 2001. Text.