Gaya APA
Turk,Christopher, .
(2003).
EFFECTIVE SPEAKING:COMMUNICATING IN SPEECH
.
CARDIFF WALES:
Elex Media Komputindo.
Gaya MLA
Turk,Christopher, .
"EFFECTIVE SPEAKING:COMMUNICATING IN SPEECH".
CARDIFF WALES:
Elex Media Komputindo,
2003.
Buku.