Gaya APA
Pencemaran Alam. (1995).
Jakarta:
Libraries Unlimited.
Gaya Chicago
Pencemaran Alam.
Cet-5.
Jakarta:
Libraries Unlimited,
1995.
Text.
Gaya MLA
Pencemaran Alam.
Cet-5.
Jakarta:
Libraries Unlimited,
1995.
Text.
Gaya Turabian
Pencemaran Alam.
Jakarta:
Libraries Unlimited,
1995.
Print.