Cobban W.A. The Upper Cretaceous dimorphic pachydiscid ammonite Menuites in the western interior of the United States / W. A. Cobban, W. J. Kennedy, 1993. - III,14 p. p. - Текст : непосредственный.
Cobban W.A. Ammonites and some characterictic bivalves from the upper cretaceous frontier formation,Natrona country,Wyoming / W.A.Cobban, 1990. - 13 p. - Текст : непосредственный.
Cobban W.A. Some acanthoceratid ammonites from upper cenomanian (upper cretaceous) rocks of Wyoming / W.A.Cobban, 1988. - Текст : непосредственный.
Molenaar C.M. Middle cretaceous stratigraphy on the south and east sides of the Uinta Basin, northeastern Utah and northwestern Colorado / C.M.Molenaar,W.A.Cobban, 1991. - 34 p. - Текст : непосредственный.
Cobban W.A. ammonite Metengonoceras Hyatt, 1903, from the Mowry Shale(Cretaceous) of Montana and Wyoming / W.A.Cobban,W.J.Kennedy, 1989. - 11 p. - Текст : непосредственный.