Duncan, P. Martin. A Monograph of the British fossil Corals. Ser. 2 / P. M. Duncan, M. B. Lond. – London : [s. n.], 1868. – (The Monographies of the Paleontographical society) . Книга 131 14914
P.4, N1 : Corals from the Zones of Ammonites Planorbis and Ammonites Angulatus in the Liassic formation. – 1867. – P.1-43. : tab.1-11.