Sinha, S. N.
Tata McGraw-Hill, 1996
Buku Referensi
Forsyth, Benjamin
McGraw-Hill, 1971
Buku Teks SO
Baker, A.L.L.
Cement and Concrete Association, 1970
Buku Teks SO
American Concrete Institute. Committee 317.
American Concrete Institute, 1965
Buku Referensi
Chu-Kia, Wang, author
Harper and Row , 1985
Buku Teks SO