Hagen-Ansert, Sandra L. Textbook of diagnostic sonography / Sandra L. Hagen-Ansert. - 7th ed. - St. Louis : Elsevier/Mosby, 2012. - 2 v. : ill. ; 29 cm. ISBN: 9780323073011 (set) RM884.43 Subjects--Topical Terms: Ultrasonography.