Gaya APA
Sulistyo, S., S., U. (2007).
SUCCESSFUL ENGLISH FOR BUSINESS DEVELOP YOUR SPEAKING SKILL IN THE BUSINESS (1).
Yogyakarta:
Andi.
Gaya MLA
Sulistyo, Susana, Setyarini,, Ule.
"SUCCESSFUL ENGLISH FOR BUSINESS DEVELOP YOUR SPEAKING SKILL IN THE BUSINESS".
1
Yogyakarta:
Andi,
2007.
Buku Inti.