@book{Halczak:2017,
  author  = "B. Halczak and B. Szura and B. Nitschke-Szram and E. Kowalczyk and S. Maciejewski and M. Zieliński and A. Szczap",
  title     = "Political and Legal Doctrines in Theoretical and Practical Terms Regarding Contemporary Challenges, ISBN: 9788378422893",
  publisher = "Oficyna Wydawnicza Uniwersytetu Zielonogórskiego",
  address   = "Zielona Góra",
  pages     = "300",
  year      = "2017",
}