Gaya APA
Langan, John. (2006).
English skills : John Langan (ed. 8).
New York:
McGraw-Hill.
Gaya Chicago
Langan, John.
English skills : John Langan.
ed. 8
New York:
McGraw-Hill,
2006.
Buku.
Gaya MLA
Langan, John.
English skills : John Langan.
ed. 8
New York:
McGraw-Hill,
2006.
Buku.
Gaya Turabian
Langan, John.
English skills : John Langan.
ed. 8
New York:
McGraw-Hill,
2006.
Buku.