Frohlich, B. (2003). Metal architecture design and construction. Boston: Publisers for Architecture.
Čikaški stil citiranjaFrohlich, Burkhard. Metal Architecture Design and Construction. Boston: Publisers for Architecture, 2003.
MLA način citiranjaFrohlich, Burkhard. Metal Architecture Design and Construction. Boston: Publisers for Architecture, 2003.
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