Gaya APA
English Brushup. (1998).
Boston:
McGrawhill.
Gaya Chicago
English Brushup.
Second Edition.
Boston:
McGrawhill,
1998.
Buku.
Gaya MLA
English Brushup.
Second Edition.
Boston:
McGrawhill,
1998.
Buku.
Gaya Turabian
English Brushup.
Boston:
McGrawhill,
1998.
Buku.