Shelley, Joseph F., author
McGraw-Hill, 1980
Buku Teks
Hibbeler, R.C., author
Pearson/Prentice Hall, 2006
Buku Teks
Meriam, J. L. (James L.), author
John Wiley & Sons, 1976
Buku Referensi
Singer, Ferdinand L., author
New York: Harper and Row, 1975
Buku Teks
Meriam, J.L. (James L.), author
John Wiley & Sons, 1978
Buku Teks