Gaya APA
Leo, S.
(2001).
English For Professional Accomodation Service
(
cet.1)
.
Amerika:
Gramedia Pustaka Utama.
Gaya MLA
Leo, Sutanto.
"English For Professional Accomodation Service".
cet.1
Amerika:
Gramedia Pustaka Utama,
2001.
Text.