Gaya APA
BOWLES, J, E. (1981).
STRUCTURAL STEEL DESIGN (INTERNATIONAL STUDENT).
LONDON:
McGRAW-HILL BOOK COMPANY N.
Gaya MLA
BOWLES, JOSEPH, E..
"STRUCTURAL STEEL DESIGN".
INTERNATIONAL STUDENT
LONDON:
McGRAW-HILL BOOK COMPANY N,
1981.
Text Book Sipil.