Hibbeler, R.C., author
Prentice-Hall, 2011
Buku Teks
Stepin, P., author
Peace Publishers, 1964
Buku Teks
Mallikarjuna, B.P., author
CBS, 1993
Buku Teks
Popov, Egor P., author
Prentice-Hall, 1978
Buku Teks
Roylance, David
John Wiley & Sons, 1996
Buku Teks