Helen Powell. (2013). Promotional Culture and Convergence: Markets,methods,media. Routledge.
शिकागो स्टाइल उद्धरणHelen Powell. Promotional Culture and Convergence: Markets,methods,media. Oxon: Routledge, 2013.
एमएलए उद्धरणHelen Powell. Promotional Culture and Convergence: Markets,methods,media. Routledge, 2013.
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