Gaya APA

Revise A2 Complete Study & Revision Guide. (2008). London: letts Educational.

Gaya Chicago

Revise A2 Complete Study & Revision Guide. . London: letts Educational, 2008. Buku.

Gaya MLA

Revise A2 Complete Study & Revision Guide. . London: letts Educational, 2008. Buku.

Gaya Turabian

Revise A2 Complete Study & Revision Guide. London: letts Educational, 2008. Buku.