Hooley, Graham; Nicoulaud, Brigitte; Rudd, John; Lee, Nick. Marketing Strategy and Competitive Positioning, 7th Edition (p. 111). Pearson Education Limited. Kindle Edition. no outside sources
Hooley, Graham; Nicoulaud, Brigitte; Rudd, John; Lee, Nick. Marketing Strategy and Competitive Positioning, 7th Edition (p. 111). Pearson Education Limited. Kindle Edition. no outside sources