Gaya APA
Harris,Michael. (2000).
Oppertunities Pre Intermediate Students Book .
Madrid:
Longman.
Gaya Chicago
Harris,Michael.
Oppertunities Pre Intermediate Students Book.
Madrid:
Longman,
2000.
.
Gaya MLA
Harris,Michael.
Oppertunities Pre Intermediate Students Book.
Madrid:
Longman,
2000.
.
Gaya Turabian
Harris,Michael.
Oppertunities Pre Intermediate Students Book.
Madrid:
Longman,
2000.
.