boschproject.org
Matthijs Ilsink, Jos Koldeweij, Ron Spronk, Luuk Hoogstede, Robert G. Erdmann, Rik Klein Gotink, Hanneke Nap and Daan Veldhuizen, Hieronymus Bosch, Painter and Draughtsman. Catalogue Raisonné, Brussels 2016, pp. 432-435.
Luuk Hoogstede, Ron Spronk, Robert G. Erdmann, Rik Klein Gotink, Matthijs Ilsink, Jos Koldeweij, Hanneke Nap and Daan Veldhuizen, Hieronymus Bosch, Painter and Draughtsman. Technical Studies, Brussels 2016, pp. 378-383.
Roger H. Marijnissen and P. Ruyffelaere, Hieronymus Bosch: the Complete Works, Antwerp 1987, p. 360.
Larry Silver, Hieronymus Bosch. New York and London 2006, pp. 298, 332-334.
Paul Vandenbroeck, Jheronimus Bosch: de verlossing van de wereld, Ghent/Amsterdam 2002, pp. 128-130, 317-318.
Roger Van Schoute, Hélène Verougstraete en Carmen Garrido, ‘Bosch and his Sphere. Technique’, in Jos Koldeweij, Bernard Vermet and Barbara van Kooij (eds.), Hieronymus Bosch. New Insights into His Life and Work, Rotterdam 2001, pp. 44-57.