Question Case Study Q Topic : 1) Select two case studies from those attempted in tutorials this semester. 2) With reference to at least 15 academic and peer reviewed journal articles provide an essay response to the following topic: "With reference to at least 15 academic journals explain the following concepts external environmental analysis, a Five Forces analysis and sources of sustainable competitive advantage. Then conduct an external environmental analysis, a Five Forces analysis, and determine the four sources of competitive advantage possessed by the firms in the case studies you have chosen."