Gaya APA
Revise GCSE Complete Study & Revision Guide. (2007).
London:
letts Educational.
Gaya Chicago
Revise GCSE Complete Study & Revision Guide.
.
London:
letts Educational,
2007.
Buku.
Gaya MLA
Revise GCSE Complete Study & Revision Guide.
.
London:
letts Educational,
2007.
Buku.
Gaya Turabian
Revise GCSE Complete Study & Revision Guide.
London:
letts Educational,
2007.
Buku.