Gaya APA
Heasley,brendan, .
(1998).
English in use for SMU 2a
.
Jakarta:
Gema Insani Pers.
Gaya MLA
Heasley,brendan, .
"English in use for SMU 2a".
Jakarta:
Gema Insani Pers,
1998.
Buku Paket.