Gaya APA
Hartlen, J.. (1981).
Swedish Geotechnical Development .
:
s.n..
Gaya Chicago
Hartlen, J..
Swedish Geotechnical Development.
:
s.n.,
1981.
Computer Software.
Gaya MLA
Hartlen, J..
Swedish Geotechnical Development.
:
s.n.,
1981.
Computer Software.
Gaya Turabian
Hartlen, J..
Swedish Geotechnical Development.
:
s.n.,
1981.
Computer Software.