Gaya APA
Otero, Maria. (2011).
Global Water Issues .
:
Bureau of International Information Programs.
Gaya Chicago
Otero, Maria.
Global Water Issues.
:
Bureau of International Information Programs,
2011.
Text.
Gaya MLA
Otero, Maria.
Global Water Issues.
:
Bureau of International Information Programs,
2011.
Text.
Gaya Turabian
Otero, Maria.
Global Water Issues.
:
Bureau of International Information Programs,
2011.
Print.