"Martin Knoller" 29 Temmuz 2017 tarihinde Wayback Machine sitesinde arşivlendi., The Concise Grove Dictionary of Art, 2002, Oxford University Press. Retrieved 12 September 2012.
"Martin Knoller" 29 Temmuz 2017 tarihinde Wayback Machine sitesinde arşivlendi., The Concise Grove Dictionary of Art, 2002, Oxford University Press. Retrieved 12 September 2012.
