Penggayaan APA
Wentz. (1998).
Safety Health and Environtmental Protection .
Boston:
McGraw Hill.
Chicago Style
Wentz.
Safety Health and Environtmental Protection.
Boston:
McGraw Hill,
1998.
Text.
MLA Style
Wentz.
Safety Health and Environtmental Protection.
Boston:
McGraw Hill,
1998.
Text.
Turabian Style
Wentz.
Safety Health and Environtmental Protection.
Boston:
McGraw Hill,
1998.
Print.