Gardner, Helen; De la Croix, Horst; Tansey, Richard G (1975). "The Renaissance in Northern Europe". Art Through the Ages (6th ed.). New York: Harcourt Brace Jovanovich. p. 555. ISBN0-15-503753-6.
Gardner, Helen; De la Croix, Horst; Tansey, Richard G (1975). "The Renaissance in Northern Europe". Art Through the Ages (6th ed.). New York: Harcourt Brace Jovanovich. pp. 556–557. ISBN0-15-503753-6.
Russell, Francis (1967). The World of Dürer. Time Life Books, Time Inc. p. 9.
Gardner, Helen; De la Croix, Horst; Tansey, Richard G (1975). "The Renaissance in Northern Europe". Art Through the Ages (6th ed.). New York: Harcourt Brace Jovanovich. pp. 561. ISBN0-15-503753-6.
Gardner, Helen; De la Croix, Horst; Tansey, Richard G (1975). "The Renaissance in Northern Europe". Art Through the Ages (6th ed.). New York: Harcourt Brace Jovanovich. pp. 564. ISBN0-15-503753-6.
Gardner, Helen; De la Croix, Horst; Tansey, Richard G (1975). "The Renaissance in Northern Europe". Art Through the Ages (6th ed.). New York: Harcourt Brace Jovanovich. pp. 557. ISBN0-15-503753-6.
Gardner, Helen; De la Croix, Horst; Tansey, Richard G (1975). "The Renaissance in Northern Europe". Art Through the Ages (6th ed.). New York: Harcourt Brace Jovanovich. pp. 555–556. ISBN0-15-503753-6.