Gaya APA
International Directory Of Offices. (1997).
:
ABS.
Gaya Chicago
International Directory Of Offices.
.
:
ABS,
1997.
Text.
Gaya MLA
International Directory Of Offices.
.
:
ABS,
1997.
Text.
Gaya Turabian
International Directory Of Offices.
:
ABS,
1997.
Print.