Thomson R.C. Pliensbachian (Lower Jurassic) biostratigraphy and ammonite fauna of the Spatsizi area,North-Central British Columbia / R.C.Thomson,P.L.Smith, 1992. - 87 p. - Текст : непосредственный.
Mesozoic stratigraphy and Jurassic paleontology West of Harrison Lake,Southwestern British Columbia / A.J.Arthur,P.L.Smith,W.H.Monger,H.W.Tipper, 1993. - 62 p. - Текст : непосредственный.