Erik Zahle, ed., A Treasury of Scandinavian Design: The standard authority on Scandinavian-designed furniture, textiles, glass, ceramics, and metal, New York, 1961, p. 11, fig. 49
Tina Jørstian and Poul Erik Munk Nielsen, eds., Light Years Ahead: The Story of the PH Lamp, Copenhagen, 1994, pp. 276-77, 280
Arne Karlsen, Danish Furniture Design: in the 20th Century, Volume 2, Copenhagen, 2007, p. 71