Journal

The American Association of Petroleum Geologists Bulletin. ≡

Articles

1. North American Commission on Stratigraphic Nomenclature, 2005. North American Stratigraphic Code: 1547–1591.
2. Meyer, R.F., Wallace, L.G. & Wagner Jr., F.J., 1991. AAPG-CSD Geologic Provinces Code Map: 1644-1651.