APA Style
Olii, Helena. (2008).
Public Speaking .
Jakarta:
PT. Indeks.
Chicago Style
Olii, Helena.
Public Speaking.
Jakarta:
PT. Indeks,
2008.
Text.
MLA Style
Olii, Helena.
Public Speaking.
Jakarta:
PT. Indeks,
2008.
Text.
Turabian Style
Olii, Helena.
Public Speaking.
Jakarta:
PT. Indeks,
2008.
Print.