1. The Palaeoecology of the Top Hosie Shale (Lower Carboniferous) at a Locality Near Kilsyth
2. Stubblefield C. J. and Calver M. A. in Stevenson I. P. and Mitchell G. H. 1955. Geology of the country between Burton upon Trent, Rugeley and Uttoxeter. Mem. Geol. Surv. Gt. Britain.
3. Ussher W. A. E. , 1913. The geology of the country around Newton Abbot. Mem. Geol. Surv. Gt. Britain.
4. The Upper Old Red Sandstone and Lower Carboniferous rocks of Bristol and the Mendips compared with those of Chepstow and the Forest of Dean;Kellaway;Bull. Geol. Surv. Gt. Britain,1955
5. Oberdevonische Conodonten (to IIα);Sannemann;Senckenbergiana lethaea,1955