Basic indicators of labour and social protection in the Czech Republic time series and graphs 2012. 1st ed. Prague : Ministry of Labour and Social Affairs, 2013. 55 s. Available on Internet: <http://www.mpsv.cz/files/clanky/16802/final_PQ_zakladni_ukazatele_AJ.pdf> ISBN 978-80-7421-067-9.