Gaya APA
ENVIRONMENTAL HANDBOOK. (1995).
Germany:
VIEWEG.
Gaya Chicago
ENVIRONMENTAL HANDBOOK.
.
Germany:
VIEWEG,
1995.
Text.
Gaya MLA
ENVIRONMENTAL HANDBOOK.
.
Germany:
VIEWEG,
1995.
Text.
Gaya Turabian
ENVIRONMENTAL HANDBOOK.
Germany:
VIEWEG,
1995.
Print.