Gaya APA
Engel, Irving. (1988).
Structural Steel In Architecture and Building Technology .
USA:
Prentice Hall.
Gaya Chicago
Engel, Irving.
Structural Steel In Architecture and Building Technology.
USA:
Prentice Hall,
1988.
Text.
Gaya MLA
Engel, Irving.
Structural Steel In Architecture and Building Technology.
USA:
Prentice Hall,
1988.
Text.
Gaya Turabian
Engel, Irving.
Structural Steel In Architecture and Building Technology.
USA:
Prentice Hall,
1988.
Print.