Hibbeler, R.C.
Pearson/Prentice Hall, 2006
Buku Teks SO
Meriam, James L.
John Wiley & Sons, 1976
Buku Referensi
Singer, Ferdinand L.
New York: Harper and Row, 1975
Buku Teks
Meriam, James L.
John Wiley & Sons, 1978
Buku Teks SO
Meriam, James L.
John Wiley & Sons, 1980
Buku Teks SO