As one of the key thinkers of social theory, public relations scholars have repeatedly turned to Habermas' work to inform their own scholarship. This book systematically reviews the distinct body of PR literature that has applied Habermas' theories to provide an in-depth and nuanced discussion on what this influential social theorist has to offer PR research. Demonstrating the applications and challenges for PR ethics and organizational communications, while opening less well-known concepts such as reflexivity, and double politics as avenues for future research, this unique source book will be of interest to all scholar and advanced students of public relations and communication studies.