Gaya APA
Swan, Michael. (1980).
Practical english usage .
Walton Street:
English Language Book Society.
Gaya Chicago
Swan, Michael.
Practical english usage.
Walton Street:
English Language Book Society,
1980.
Buku.
Gaya MLA
Swan, Michael.
Practical english usage.
Walton Street:
English Language Book Society,
1980.
Buku.
Gaya Turabian
Swan, Michael.
Practical english usage.
Walton Street:
English Language Book Society,
1980.
Buku.