Gaya APA
Hansen, Torben C.. (s.a.).
Text book on concrete technology .
[s.l.]:
United Nations.
Gaya Chicago
Hansen, Torben C..
Text book on concrete technology.
[s.l.]:
United Nations,
s.a..
Text.
Gaya MLA
Hansen, Torben C..
Text book on concrete technology.
[s.l.]:
United Nations,
s.a..
Text.
Gaya Turabian
Hansen, Torben C..
Text book on concrete technology.
[s.l.]:
United Nations,
s.a..
Print.