APA (7 वां संस्करण) प्रशस्ति पत्र

Karmel, P. (1989). Robert Morris: The felt works ; Grey Art Gallery, New York, May 22, to July 14, 1989 / curated by Pepe Karmel.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Karmel, Pepe. Robert Morris: The Felt Works ; Grey Art Gallery, New York, May 22, to July 14, 1989 / Curated by Pepe Karmel. New York, 1989.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Karmel, Pepe. Robert Morris: The Felt Works ; Grey Art Gallery, New York, May 22, to July 14, 1989 / Curated by Pepe Karmel. 1989.