Gaya APA
Village water supply : a world bank paper. (1976).
Washington:
World Bank.
Gaya Chicago
Village water supply : a world bank paper.
text.
Washington:
World Bank,
1976.
Tesis.
Gaya MLA
Village water supply : a world bank paper.
text.
Washington:
World Bank,
1976.
Tesis.
Gaya Turabian
Village water supply : a world bank paper.
Washington:
World Bank,
1976.
Tesis.