W. & F.C. Bonham & Sons & Dryden, E. (1987). The Ernst Dryden Archive: Which will be sold at auction by Bonhams on Wednesday, December 2nd, 1987. W. & F.C. Bonham & Sons Ltd.
Lua i Stíl Chicago (17ú heag.)W. & F.C. Bonham & Sons agus Ernst Dryden. The Ernst Dryden Archive: Which Will Be Sold at Auction by Bonhams on Wednesday, December 2nd, 1987. London: W. & F.C. Bonham & Sons Ltd, 1987.
Lua MLA (8ú heag.)W. & F.C. Bonham & Sons agus Ernst Dryden. The Ernst Dryden Archive: Which Will Be Sold at Auction by Bonhams on Wednesday, December 2nd, 1987. W. & F.C. Bonham & Sons Ltd, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.