Gaya APA
Sirait, C, B.
(2007).
THE POWER OF PUBLIC SPEAKING
.
Yogyakarta:
CV. Bintang Jaya Pratama.
Gaya MLA
Sirait, Charles, Bonar.
"THE POWER OF PUBLIC SPEAKING".
Yogyakarta:
CV. Bintang Jaya Pratama,
2007.
Text.