Ghosh, S.K.
International Code Council, 2003
Buku Teks
DeLong, J. Bradford
McGraw-Hill, 2002
Buku Teks
Gates, Jean Key
McGraw-Hill, 1974
Buku Referensi
Hyman, David N.
Richard D. Irwin, 1971
Buku Teks
American Society of Civil Engineers, 1987
Buku Referensi