Sauer, C., & Raussmüller, U. (2006). Robert Ryman at Inverleith House: Royal Botanic Garden Edniburgh ; Raussmüller Collection / Christel Sauer. [Idea and concept by Urs Raussmüller and Christel Sauer. Ed. by Christel Sauer]. Raussmüller Collection.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSauer, Christel, और Urs Raussmüller. Robert Ryman at Inverleith House: Royal Botanic Garden Edniburgh ; Raussmüller Collection / Christel Sauer. [Idea and Concept by Urs Raussmüller and Christel Sauer. Ed. by Christel Sauer]. Frauenfeld/Basel: Raussmüller Collection, 2006.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSauer, Christel, और Urs Raussmüller. Robert Ryman at Inverleith House: Royal Botanic Garden Edniburgh ; Raussmüller Collection / Christel Sauer. [Idea and Concept by Urs Raussmüller and Christel Sauer. Ed. by Christel Sauer]. Raussmüller Collection, 2006.