Gaya APA
Hopkins, A., Potter, J.
(1994).
A Head Look Classroom Course Students' Book 1
(
Cet.1)
.
England:
Longman.
Gaya MLA
Hopkins, Andy., Potter, Jocelyn.
"A Head Look Classroom Course Students' Book 1".
Cet.1
England:
Longman,
1994.
Prodi TBI.