Townsend, A. L., author
IKIP Semarang Press , 1986
Buku Teks
Babbitt, Harold E. (Harold Eaton), 1888-, author
McGraw-Hill, 1960
Buku Teks
Cowles, 1996
Buku Referensi
Guidelines plumbing Indonesia, 1979
Buku Teks
Church, James C., author
McGraw-Hill, 1979
Buku Referensi