Gaya APA
N., S., E., Adi, S. (2004).
Intensive english for flight attendants / Emil N. Siagian, Adi Sutrisno (Ed.ke-1, Cet.1).
Malang:
.
Gaya MLA
Siagian, Emil, N.., Sutrisno, Adi.
"Intensive english for flight attendants / Emil N. Siagian, Adi Sutrisno".
Ed.ke-1, Cet.1
Malang:
,
2004.
Textbook.