Martin, Carole
McGraw-Hill, 2012
Buku Teks
Fletcher, John
Duckworth, 1973
Buku Teks
Spradley, James P.
Halt, Rinehart and Winston, 1979
Buku Teks SO
American Concrete Institute. Committee 317.
American Concrete Institute, 1965
Buku Referensi
Edson, Gary
Routledge, 1996
Buku Referensi