Friedbert Kind-Barkauskas, Architect Bundesverbend, Deutnchens Zementidustrie, Cologne
Birkhauser, 2002
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ICBO, 2000
Buku Referensi
edited by Mark Fintel
Van Nostrand Reinhold, 1974
Buku Referensi
Sinha, S. N., author
Tata McGraw-Hill, 1996
Buku Referensi
American Concrete Institute. Committee 317.
American Concrete Institute, 1965
Buku Referensi