Gaya APA
LEO, S.
(2001).
English for Professional Accomodation Services
(
Edisi 1)
.
Jakarta:
PT Gramedia Pustaka Utama.
Gaya MLA
LEO, Sutanto.
"English for Professional Accomodation Services".
Edisi 1
Jakarta:
PT Gramedia Pustaka Utama,
2001.
Text.