Hibbeler, R.C.
Prentice-Hall, 2003
Buku Teks SO
Hibbeler, R.C.
Pearson/Prentice Hall, 2005
Buku Teks SO
Hibberler, R. C.
Prentice-Hall, 1997
Buku Teks
Arges, K. Pete
McGraw-Hill, 1963
Buku Teks SO
Hibbeler, R.C.
Pearson Prentice Hall, 2005
Buku Teks SO