MATUŠKOVÁ, Anna. Poland. The Victory of "Social Oriented" over "Liberal Oriented" Poland. In ŠARADÍN, Pavel a Eva BRADOVÁ. Visegrad votes. Parliamentary Elections 2005 - 2006. 1. vyd. Olomouc: Palacký University, 2007, s. 59-88, 29 s. verze 1. ISBN 978-80-244-1625-0.