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Smith, Harvey L. (January 1958). "Contingencies of Professional Differentiation". The American Journal of Sociology. 63 (4): 410. doi:10.1086/222264. S2CID144795977.
Burt, Stephen (Winter 2005). ""Blown To Atoms or Reshaped At Will": Recent Books About Comics". College Literature. 32: 166. doi:10.1353/lit.2005.0004. S2CID143968817.
Tierney, Richard L. (September 9, 2004). "The Derleth Mythos". Nightscapes. Archived from the original on February 9, 2007. Retrieved January 14, 2007.