Shepheard, Paul, author
Massachusetts Institute of Technology, 1995
Buku Teks
Harris, David A.
McGraw-Hill , 1997
Buku Teks
McKenzie, Bertha, author
University of Sydney, 1989
Buku Referensi
Reid, Esmond
MIT Press, 1984
Buku Teks
Blume, John A., author
Portland Cement Association, 1961
Buku Teks