APA Style
OLII, Helena. (2007).
Public Speaking (1st edition).
Jakarta:
Indeks.
Chicago Style
OLII, Helena.
Public Speaking.
1st edition
Jakarta:
Indeks,
2007.
Text.
MLA Style
OLII, Helena.
Public Speaking.
1st edition
Jakarta:
Indeks,
2007.
Text.
Turabian Style
OLII, Helena.
Public Speaking.
1st edition
Jakarta:
Indeks,
2007.
Print.