Down with "op. cit.".
Hartley
James
J
D000043:Abstracting and Indexing / Q000379:methods*; D004059:Diffusion of Innovation; D006801:Humans; D018156:Journalism, Medical / Q000592:standards; D010506:Periodicals as Topic / Q000592:standards*; D012107:Research Design; D014481:United States; D014956:Writing / Q000592:standards*