Παραπομπή σε μορφή APA (7η εκδ.)

Athanassopoulou-Pennas, V., & Athanassopoulou-Pennas, V. (1991). Byzantine monetary affairs during the 8th, 9th, 10th and 11th centuries.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Athanassopoulou-Pennas, V., και Vassiliki Athanassopoulou-Pennas. Byzantine Monetary Affairs During the 8th, 9th, 10th and 11th Centuries. 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Athanassopoulou-Pennas, V., και Vassiliki Athanassopoulou-Pennas. Byzantine Monetary Affairs During the 8th, 9th, 10th and 11th Centuries. 1991.