Gaya APA
Successful Direct Marketing Methods. (1988).
:
.
Gaya Chicago
Successful Direct Marketing Methods.
.
:
,
1988.
Textbook.
Gaya MLA
Successful Direct Marketing Methods.
.
:
,
1988.
Textbook.
Gaya Turabian
Successful Direct Marketing Methods.
:
,
1988.
Textbook.