Mokashi, V.S.
Tata McGraw-Hill, 1995
Buku Teks
Cook, David I., author
International Textbook, 1960
Buku Teks
Hibbeler, R. C., author
Prentice-Hall, 1997
Buku Teks
Cook, David I., author
International Textbook, 1960
Buku Teks
Hibbeler, R. C., author
Macmillan, 1978
Buku Teks