<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Pettijohn, Terry F. / Donald F. Sacco Jr.</hi> (2009): "The language of lyrics: An analysis of popular Billboard songs across conditions of social and economic threat", in: <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic" xml:space="preserve">Journal of Language and Social Psychology </hi>28(3): 297-311.