Gaya APA
N, S., Sustrisno,Adi, .
(2004).
Intenssive english for flight attendants
(
Ed.pertama)
.
Malang:
Bayumedia.
Gaya MLA
N, Siagian,Emil., Sustrisno,Adi, .
"Intenssive english for flight attendants".
Ed.pertama
Malang:
Bayumedia,
2004.
Textbook.