Gaya APA
Bell, Gordon. (1989).
The Secrets of Successful Speaking And Business Presentation .
New York:
Heinemann.
Gaya Chicago
Bell, Gordon.
The Secrets of Successful Speaking And Business Presentation.
New York:
Heinemann,
1989.
Buku Teks.
Gaya MLA
Bell, Gordon.
The Secrets of Successful Speaking And Business Presentation.
New York:
Heinemann,
1989.
Buku Teks.
Gaya Turabian
Bell, Gordon.
The Secrets of Successful Speaking And Business Presentation.
New York:
Heinemann,
1989.
Buku Teks.