ROMAN, M.; ZGIEP, Łukasz. Promotion as part of the marketing mix and its application in enterprise activities . Zeszyty Naukowe SGGW, Polityki Europejskie, Finanse i Marketing, [S. l.], n. 9(58), p. 416–424, 2013. Disponível em: https://pefim.sggw.edu.pl/article/view/1373. Acesso em: 18 kwi. 2024.