Gaya APA
Brockenbrough, R, L, I, M, F, S. (1999).
Structural steel designers handbook 3e (3th edition).
United States of America:
McGraw-Hill Inc..
Gaya MLA
Brockenbrough, Roger, L., II., Merritt,, Frederick, S..
"Structural steel designers handbook 3e".
3th edition
United States of America:
McGraw-Hill Inc.,
1999.
Text.