Mari, L. M., & Picciaia, F. (2014). The accounting methods of the "Opera del Duomo" of Orvieto, from its origins to the 16th century statute reform: single or double-entry bookkeeping?. De Computis, Revista Española De Historia De La Contabilidad., 11(21), 49–72. https://doi.org/10.26784/issn.1886-1881.v11i21.38