Gaya APA
UNDERSATANDING COMMUNICATIONS SYSTEMS. (1980).
:
.
Gaya Chicago
UNDERSATANDING COMMUNICATIONS SYSTEMS.
.
:
,
1980.
Text.
Gaya MLA
UNDERSATANDING COMMUNICATIONS SYSTEMS.
.
:
,
1980.
Text.
Gaya Turabian
UNDERSATANDING COMMUNICATIONS SYSTEMS.
:
,
1980.
Print.