Ulmer, Robert R., 1969 Effective crisis communication : moving from crisis to opportunity / Robert R. Ulmer, Timothy L. Sellnow, Matthew W. Seeger. - 2nd ed. - Thousand Oaks : SAGE, 2011. - xvii, 239 p. ; 23 cm. Includes bibliographical references and index. ISBN: 9781412980333 (hbk.) 9781412980340 (pbk.) RM140.78 Subjects--Topical Terms: Crisis management.Emergency management.Communication in management.Communication in organizations.