Ermen, R. (1993). Shapes and Positions: Carl Andre, Dan Flavin, Donald Judd, Imi Knoebel, Richard Long, Robert Mangold, Gerhard Richter, Robert Ryman, F.E. Walther : Kunsthalle Ritter, Klagenfurt, 11.9.1992-30.1.1993 : Museum Fridericianum, Kassel, 14.2.-18.4.1993 / Reinhard Ermen. Kunstforum.
Chicagoスタイル(17版)引用形式Ermen, Reinhard. "Shapes and Positions: Carl Andre, Dan Flavin, Donald Judd, Imi Knoebel, Richard Long, Robert Mangold, Gerhard Richter, Robert Ryman, F.E. Walther : Kunsthalle Ritter, Klagenfurt, 11.9.1992-30.1.1993 : Museum Fridericianum, Kassel, 14.2.-18.4.1993 / Reinhard Ermen." Kunstforum 1993.
MLA(8版)引用形式Ermen, Reinhard. "Shapes and Positions: Carl Andre, Dan Flavin, Donald Judd, Imi Knoebel, Richard Long, Robert Mangold, Gerhard Richter, Robert Ryman, F.E. Walther : Kunsthalle Ritter, Klagenfurt, 11.9.1992-30.1.1993 : Museum Fridericianum, Kassel, 14.2.-18.4.1993 / Reinhard Ermen." Kunstforum, 1993.