1. Douglass autobiographies;Douglass,1994
2. Freire P. Pedagogy of the oppressed (30th anniversary ed.). New York: Continuum; 2005 (original publication /1970).
3. Historical-philosophical analysis of the professional nurse obligation to participate in sociopolitical activities;Ballou;Policy Polit Nurs Prac,2000
4. Grace PJ. A philosophical analysis of the concept ‘advocacy’: Implications for professional -patient relationships. University of Tennessee-Knoxville, Hodges Library Unpublished dissertation. Thesis 986.G73; 1998. Available at: http://proquest.umi.umi.com. Publication number AAT9923287, Proquest Document ID NO.734421751.
5. Professional advocacy: Widening the scope of accountability;Grace;Nurs Philos,2001