Παραπομπή σε μορφή APA (7η εκδ.)

Tronzo, W. (1997). The cultures of his kingdom: Roger II and the Cappella Palatina in Palermo. Princeton University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Tronzo, William. The Cultures of His Kingdom: Roger II and the Cappella Palatina in Palermo. Princeton: Princeton University Press, 1997.

Παραπομπή σε μορφή MLA (8th εκδ.)

Tronzo, William. The Cultures of His Kingdom: Roger II and the Cappella Palatina in Palermo. Princeton University Press, 1997.