Durkheim′s types of suicide (focus on 1 type) Required Sources: Durkheim, Suicide and Marson and Powell, ″Suicide Among Elders: A Durkheimian Proposal.″ Other good sources are the journals Sociological Theory, The American Sociological Review, The Monthly Review, and Capitalism Nature Socialism. I also suggest that you visit the Theory Section of the American Sociological Association’s website: http://www.asatheory.org/ It has links to numerous journals and resources. Inappropriate Sources: The following are inappropriate sources for a university level research paper: textbooks, lecture notes, personal anecdotes, websites, and encyclopedias.