Duncan, K., & Hodgkin, H. (1991). Howard Hodgkin: Hand-coloured prints, 1986 - 1991 ; catalog of an exhibition held Mar. 27 - Apr. 20, 1991 at Waddington Graphics, London/ [catalogue coordination by Katharine Duncan]. Waddington Graphics.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuncan, Katharine, और Howard Hodgkin. Howard Hodgkin: Hand-coloured Prints, 1986 - 1991 ; Catalog of an Exhibition Held Mar. 27 - Apr. 20, 1991 at Waddington Graphics, London/ [catalogue Coordination by Katharine Duncan]. London: Waddington Graphics, 1991.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDuncan, Katharine, और Howard Hodgkin. Howard Hodgkin: Hand-coloured Prints, 1986 - 1991 ; Catalog of an Exhibition Held Mar. 27 - Apr. 20, 1991 at Waddington Graphics, London/ [catalogue Coordination by Katharine Duncan]. Waddington Graphics, 1991.