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.