Gaya APA

Siagian, E, N., Sutrisno, A. (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.