|Citation=Williams, D. (2017), "Joseph Eckhel and his correspondents from Sicily and the south of Italy: the Prince of Torremuzza (Palermo) and Michele Vargas Macciucca (Naples)", M. Caccamo Caltabiano et alii (eds.), XV International Numismatic Congress. Proceedings, Rome - Messina, vol. 1, pp. 291-295. | |Citation=Williams, D. (2017), "Joseph Eckhel and his correspondents from Sicily and the south of Italy: the Prince of Torremuzza (Palermo) and Michele Vargas Macciucca (Naples)", M. Caccamo Caltabiano et alii (eds.), XV International Numismatic Congress. Proceedings, Rome - Messina, vol. 1, pp. 291-295. |