Gaya APA
Setyarini, S. (2007).
Succesfull English For Business: Develop Your Speaking Skill In The Business .
yogyakarta:
andi.
Gaya MLA
Setyarini, Susana.
"Succesfull English For Business: Develop Your Speaking Skill In The Business".
yogyakarta:
andi,
2007.
Text.