Ritter, R. M. (2005), New Hart's Rules:The Handbook of Style for Writers and Editors: The Handbook of Style for Writers and Editors, Oxford University Press, s. 194, ISBN9780191650499
Matheeussen, Constant; Fantazzi, Charles; George, Edward V., red. (1987). «General Introduction, §IV. The date of the Opuscula varia». Early Writings I. Selected Works of Juan Luis Vives 1. Leiden: E. J. Brill. s. xvii. ISBN9789004077829. Henta 17 March 2014. «The town of Louvain, belonging to the duchy of Brabant, used the Easter Style, beginning the year at Holy Saturday.»
