Grässlin, K. (1999). Imi Giese, Jörg Immendorff, Imi Knoebel, Palermo, Katharina Sieverding.
Chicagoスタイル(17版)引用形式Grässlin, Karola. Imi Giese, Jörg Immendorff, Imi Knoebel, Palermo, Katharina Sieverding. Braunschweig, 1999.
MLA(8版)引用形式Grässlin, Karola. Imi Giese, Jörg Immendorff, Imi Knoebel, Palermo, Katharina Sieverding. 1999.
警告: この引用は必ずしも正確ではありません.