Gaya APA
Barnard, Roger. (1993).
Business venture 2 .
:
.
Gaya Chicago
Barnard, Roger.
Business venture 2.
:
,
1993.
Tesis.
Gaya MLA
Barnard, Roger.
Business venture 2.
:
,
1993.
Tesis.
Gaya Turabian
Barnard, Roger.
Business venture 2.
:
,
1993.
Tesis.