Scullen, Herman A. A revision of the genus Eucerceris cresson (Hymenoptera:Sphecidae) - Washington : Simthsonian Institution, 1968 - 96 p. : ilus. - U.S. National Museum Bulletin ; 268 . - U.S. National Museum Bulletin ; 268 . LCCN: 55773 Subjects--Topical Terms: Eucerceris. Dewey Class. No.: 595.79 / S2