Gaya APA
Long, J, C, R, M, N. (1987).
Breakthrough : A Course in English Communication Practice New Edition 3 .
Hong Kong:
Oxford.
Gaya MLA
Long, J., C., Richards, M., N..
"Breakthrough : A Course in English Communication Practice New Edition 3".
Hong Kong:
Oxford,
1987.
Koleksi Cetak.