Loock, U., Wiitasalo, S., & Daniëls, R. (1993). René Daniëls, Shirley Wiitasalo: [Art Gallery of York University, Toronto, Ontario, January 13 - Februar 14, 1993, Illingworth Kerr Gallery Alberta College of Art, Calgary, Alberta, March 4 - March 25, 1993, Mackenzie Art Gallery, Regina, Saskatchewan, April 15 - Mai 31, 1993, Museum Haus Lange Krefeld, Germany, 1994] / Ulrich Loock. [Museum Haus Lange].
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিLoock, Ulrich, Shirley Wiitasalo, এবং René Daniëls. René Daniëls, Shirley Wiitasalo: [Art Gallery of York University, Toronto, Ontario, January 13 - Februar 14, 1993, Illingworth Kerr Gallery Alberta College of Art, Calgary, Alberta, March 4 - March 25, 1993, Mackenzie Art Gallery, Regina, Saskatchewan, April 15 - Mai 31, 1993, Museum Haus Lange Krefeld, Germany, 1994] / Ulrich Loock. [Krefeld] ; Toronto: [Museum Haus Lange], 1993.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিLoock, Ulrich, et al. René Daniëls, Shirley Wiitasalo: [Art Gallery of York University, Toronto, Ontario, January 13 - Februar 14, 1993, Illingworth Kerr Gallery Alberta College of Art, Calgary, Alberta, March 4 - March 25, 1993, Mackenzie Art Gallery, Regina, Saskatchewan, April 15 - Mai 31, 1993, Museum Haus Lange Krefeld, Germany, 1994] / Ulrich Loock. [Museum Haus Lange], 1993.