A. A. Ruitenberg, L. R. Fyffe, S. R. McCutcheon, C. J. St. Peter, R. R. Irrinki, and D. V. Venugopal, “Evolution of Pre-Carboniferous Tectonostratigraphic Zones in the New Brunswick Appalachians”, GS, vol. 4, no. 4, Nov. 1977.