Watkins, David K.; Bowdler, Jay L. (1983): Cretaceous calcareous nannofossils from DSDP Leg 77, southeastern Gulf of Mexico. Geological Society of America (GSA), Boulder, CO, United States, In: Anonymous, 32nd annual meeting, Southeastern Section, Geological Society of America; with the Southeast Section of the National Association of Geology Teachers and the Southeastern Section of the Paleontological Society, 15 (2), 48, georefid:1983-061956