Gaya APA
Olii, Helena. (2009).
Public Speaking (-).
jakarta:
INDEKS.
Gaya Chicago
Olii, Helena.
Public Speaking.
-
jakarta:
INDEKS,
2009.
Text.
Gaya MLA
Olii, Helena.
Public Speaking.
-
jakarta:
INDEKS,
2009.
Text.
Gaya Turabian
Olii, Helena.
Public Speaking.
-
jakarta:
INDEKS,
2009.
Print.