Gaya APA
ASHTON, C., SUNDAH, M, E, [.
(2004).
Hotel courtesy :
(
cet. 3)
.
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
ASHTON, Chris., SUNDAH, Maria, Elvire, [ed.].
"Hotel courtesy :".
cet. 3
Jakarta:
Gramedia Pustaka Utama,
2004.
Buku.