Broughton, Vanda
Facet Publishing, 2006
Buku Teks SO
Van Duyn, Julia
Reston Publishing Company, Inc ., 1975
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George Newnes Limited, 1960
Buku Referensi
Friedbert Kind-Barkauskas, Architect Bundesverbend, Deutnchens Zementidustrie, Cologne
Birkhauser, 2002
Buku Referensi
American Institute of Steel Construction
American Institute of Steel Construction, 1980
Buku Referensi