Gaya APA

The Hard Way. (2011). London: Bantam books.

Gaya Chicago

The Hard Way. . London: Bantam books, 2011. Buku.

Gaya MLA

The Hard Way. . London: Bantam books, 2011. Buku.

Gaya Turabian

The Hard Way. London: Bantam books, 2011. Buku.