Template:Bamber et al., 1972
- Bamber, E.W., Bolton, T.E., Copeland, M.J., Cumming, L.M., Frebold, H., Fritz, W.H., Jeletzky, J.A., McGregor, D.C., McLaren, D.J., Norford, B.S., Norris, A.W., Sinclair, G.W., Tozer, E.T. & Wagner, F.J.E. 1972. Biochronologie: succession type du phanérozoïque. Geological Survey of Canada, Economic Geology Report 1. DOI: 10.4095/106166