Łockiewicz, M. i Jaskulska, M. (2017) „Polish as L1, English as L2: the linguistic transfer impact on Second Language Acquisition stemming from the interlingual differences: implications for young learners education”, Problemy Wczesnej Edukacji, 37(2), s. 68–76. doi: 10.5604/01.3001.0010.5589.