APA Style
Olii, Helena. (2010).
Public speaking / Helena Olii .
Jakarta:
Indeks.
Chicago Style
Olii, Helena.
Public speaking / Helena Olii.
Jakarta:
Indeks,
2010.
Text.
MLA Style
Olii, Helena.
Public speaking / Helena Olii.
Jakarta:
Indeks,
2010.
Text.
Turabian Style
Olii, Helena.
Public speaking / Helena Olii.
Jakarta:
Indeks,
2010.
Print.