Cybulska, Katarzyna. «Hanna KOMOROWSKA (Ed.) Issues in Promoting Multilingualism. Teaching – Learning – Assessment. Warsaw: Foundation for the Development of the Education System (FRSE), 2011. 360 Pp. ISBN 978-83-62634-19-4». Linguarum Arena 3 (maio 11, 2018): 143–146. Acedido maio 18, 2026. https://ojstest.xyz/ojsletrasX/index.php/LinguarumArena/article/view/3985.