Ulmer, Robert R. Effective crisis communication. : moving from crisis to opportunity. Robert R. Ulmer Timothy L. Sellnow and Matthew W Seeger. - 2nd - Los Angeles: SAGE, 2011. - 239p; ISBN: 9781412980333 Subjects--Topical Terms: Crises managementEmergency managementCommunication in management Dewey Class. No.: 658.477 / ULE