Marquis, Bessie L. 
Leadership roles and management functions in nursing :  theory and application /  Bessie L. Marquis, Carol J. Huston.   - 7th ed., International ed.   - Philadelphia, Pa. ;  London :  Wolters Kluwer/Lippincott Williams & Wilkins,  c2012.   - xiv, 624 p. :  col. ill. ;  26 cm.