Leddy, Susan Kun. Conceptual bases of professional / Susan Kun Leddy. - 4th edition. - New York : Lippincott, c1998. - xvi, 462 p. : black and white illustrations ; 23 cm. Includes references. ISBN: 0397552777 Subjects--Topical Terms: Nursing.Nursing Theory. Dewey Class. No.: CIR 610.73L472c 1998