Gaya APA
Elvire, M.
(1992).
Behinf The Smile Of A Stewardess
.
Jakarta:
PT Gramedia Pustaka Utama.
Gaya MLA
Elvire, Maria.
"Behinf The Smile Of A Stewardess".
Jakarta:
PT Gramedia Pustaka Utama,
1992.
Textbook.