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Lua i Stíl Chicago (17ú heag.)POLONSKY MICHAEL JAY. ENVIRONMENTAL MARKETING: STRATEGIES, PRACTICE, THEORY & RESEARCH. MUMBAI: JAICO PUBLISHING HOUSE, 2007.
Lua MLA (9ú heag.)POLONSKY MICHAEL JAY. ENVIRONMENTAL MARKETING: STRATEGIES, PRACTICE, THEORY & RESEARCH. JAICO PUBLISHING HOUSE, 2007.
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