Cita APA (7th ed.)

Follett Ken. (1979). Eye of the Needle. A Signet Book, Penguin Group.

Cita Chicago (17th ed.)

Follett Ken. Eye of the Needle. NewYork: A Signet Book, Penguin Group, 1979.

Cita MLA (9th ed.)

Follett Ken. Eye of the Needle. A Signet Book, Penguin Group, 1979.