Meek, John L.
E and FN Spon, 1991
Buku Teks SO
by Fred W. Beaufait ... [and others]
Dept. of Civil Engineering, Vanderbilt University, 1975
Buku Teks SO
Jenkins, W.M.
McGraw-Hill, 1969
Buku Teks SO
Kovach, Ladis D.
Holden-Day, 1984
Buku Teks SO
Gould, Harvey
Addison-Wesley, 1996
Buku Teks SO