Gaya APA
Unsworth, J, F.
(2010).
DESIGN OF MODERN STEEL RAILWAY BRIDGES
.
Broken Sound Parkway NW:
CRC press.
Gaya MLA
Unsworth, John, F..
"DESIGN OF MODERN STEEL RAILWAY BRIDGES".
Broken Sound Parkway NW:
CRC press,
2010.
Text.