Citazione Stile APA (7a Edizione)

Matthews, J. (1991). The elements of the Grail tradition. Element.

Citazione stile Chigago Style (17a edizione)

Matthews, John. The Elements of the Grail Tradition. Rockport, MA: Element, 1991.

Citatione MLA (9a ed.)

Matthews, John. The Elements of the Grail Tradition. Element, 1991.