Gaya APA
Revise AS & A2 Complete Study & Revision Guide. (2008).
London:
Letss and Lonsdale.
Gaya Chicago
Revise AS & A2 Complete Study & Revision Guide.
.
London:
Letss and Lonsdale,
2008.
Buku.
Gaya MLA
Revise AS & A2 Complete Study & Revision Guide.
.
London:
Letss and Lonsdale,
2008.
Buku.
Gaya Turabian
Revise AS & A2 Complete Study & Revision Guide.
London:
Letss and Lonsdale,
2008.
Buku.