Hibbeler, R.C., author
Pearson, 2017
Buku Teks
Muvdi, B.B., author
Macmillan, 1980
Buku Teks
Cerny, Ladislav, author
McGraw-Hill, 1981
Buku Teks
Peterson, Aldor C., author
Allyn and Bacon, 1981
Buku Teks
Snyder, Robert D., author
McGraw-Hill, 1973
Buku Teks