Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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