Malinowska, P., and A. Zielińska-Chmielewska. “APPLIED PRICING STRATEGIES OF TOOTHPASTES’ PRODUCERS ON POLISH COSMETICS MARKET”. Acta Scientiarum Polonorum. Oeconomia, vol. 10, no. 3, Sept. 2011, pp. 97-107, https://aspe.sggw.edu.pl/article/view/597.