Nogan, D. S. (1964). Foraminifera, stratigraphy, and paleoecology of the Aquia Formation of Maryland and Virginia. Cushman Foundation for Foraminiferal Research.
Chicago-referens (17:e uppl.)Nogan, Donald S. Foraminifera, Stratigraphy, and Paleoecology of the Aquia Formation of Maryland and Virginia. Ithaca, N.Y: Cushman Foundation for Foraminiferal Research, 1964.
MLA-referens (9:e uppl.)Nogan, Donald S. Foraminifera, Stratigraphy, and Paleoecology of the Aquia Formation of Maryland and Virginia. Cushman Foundation for Foraminiferal Research, 1964.
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