Edwards, L.E.,
1996
Chapter 25A. Graphic correlation of the Marlboro Clay and Nanjemoy Formation (uppermost Paleocene and Lower Eocene) of Virginia and Maryland.
In: Jansonius, J. and McGregor, D.C. (editors), Palynology: Principles and Applications, v.3, p.989-999; American Association of Stratigraphic Palynologists Foundation, Dallas, U.S.A.