Gaya APA
RECOVERY & RECYCLING SYSTEMS GUIDELINES. (1999).
FRANCE:
UNEP.
Gaya Chicago
RECOVERY & RECYCLING SYSTEMS GUIDELINES.
.
FRANCE:
UNEP,
1999.
Text.
Gaya MLA
RECOVERY & RECYCLING SYSTEMS GUIDELINES.
.
FRANCE:
UNEP,
1999.
Text.
Gaya Turabian
RECOVERY & RECYCLING SYSTEMS GUIDELINES.
FRANCE:
UNEP,
1999.
Print.