Steel, E.W. (Ernest William), author
Water supply and sewerage
McGraw-Hill, 1979
 Buku Teks
Steel, E.W., author
Water supply and sewerage
McGraw-Hill, 1979
 Buku Referensi
Urban water supply handbook
Larry W. Mays
McGraw-Hill, 2002.
 Buku Teks
Cheremisinoff, Paul N., author
Water management and supply
Prentice-Hall, 1993
 Buku Teks
Women's labour force participation rates in Latin America
 Artikel Jurnal
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