Pataki, S. P., S. Fathelbab, M. S. Clark, and C. H. Malinowski. “Communal Strength Norms in the United States and Egypt”. Interpersona: An International Journal on Personal Relationships, Vol. 7, no. 1, June 2013, pp. 77-87, doi:10.5964/ijpr.v7i1.110.