Gaya APA
Asfahl, C., R., Rieske, D., W. (2010).
Industrial safety and health management (ed. vi).
sidoarjo:
Penerbit Lakeisha.
Gaya MLA
Asfahl, C., R., Rieske, D., W..
Industrial safety and health management.
ed. vi
sidoarjo:
Penerbit Lakeisha,
2010.
Text.