Gaya APA
Sasseville, D, R. (1997).
ISO 14000 ANSWER BOOK : Enviromental Management fo the World Market .
:
Jhon Wiley & Sons.
Gaya MLA
Sasseville, Dennis, R..
"ISO 14000 ANSWER BOOK : Enviromental Management fo the World Market".
:
Jhon Wiley & Sons,
1997.
Text.