Gaya APA
Dubinko, S., Koledenkova, L.
(1999).
Pratice Your Business English
(
2)
.
Estonia:
Tea Publishers.
Gaya MLA
Dubinko, Svetlana., Koledenkova, Ludmila.
"Pratice Your Business English".
2
Estonia:
Tea Publishers,
1999.
Buku Pend. Bahasa Inggris.