Weststeijn, Thijs. “Edwin Buijsen, Charles Dumas and Volker Manuth(eds). Face Book. Studies on Dutch and Flemish Portraiture of the 16th-18th Centuries. Liber Amicorum Presented to Rudolf E.O. Ekkart on the Occasion of His 65th Birthday”. De Zeventiende Eeuw, vol. 29, no. 1, Apr. 2013, pp. 134-5, https://platform.openjournals.nl/de-zeventiende-eeuw/article/view/26803.