Waetzoldt, S. (1970). Art treasures in Germany: Monuments, masterpieces, commissions, and collections. Hamlyn.
Lua i Stíl Chicago (17ú heag.)Waetzoldt, Stephan. Art Treasures in Germany: Monuments, Masterpieces, Commissions, and Collections. London: Hamlyn, 1970.
Lua MLA (9ú heag.)Waetzoldt, Stephan. Art Treasures in Germany: Monuments, Masterpieces, Commissions, and Collections. Hamlyn, 1970.
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