Johnson, David W.; Johnson, Roger T. (2000). "Civil political discourse in a democracy: The contribution of psychology". Peace and Conflict: Journal of Peace Psychology. 6 (4): 291–317. doi:10.1207/S15327949PAC0604_01. ISSN1532-7949.
Hult, F.M. (2015). "Making policy connections across scales using nexus analysis". In Hult, F.M.; Johnson, D.C. (eds.). Research Methods in Language Policy and Planning: A Practical Guide (Firsted.). Chichester, West Sussex: Wiley. pp.217–31. ISBN978-1-118-33984-8. OCLC905699853.
Johnson, David W.; Johnson, Roger T. (2000). "Civil political discourse in a democracy: The contribution of psychology". Peace and Conflict: Journal of Peace Psychology. 6 (4): 291–317. doi:10.1207/S15327949PAC0604_01. ISSN1532-7949.