Gaya APA
Widyawati, R, A. (2003).
The important role of sales and marketing staff in novotel Surabaya Hotel and suites .
Malang, Jatim:
UNMER.
Gaya MLA
Widyawati, Reni, Agus.
"The important role of sales and marketing staff in novotel Surabaya Hotel and suites".
Malang, Jatim:
UNMER,
2003.
Text.