Polcyn, J.
(2014).
 Komitety ....
<em>Progress In Economic Sciences, </em>(1).
Pobrane z <a href="https://pes.ans.pila.pl/index.php/PES/article/view/10" target="_new">https://pes.ans.pila.pl/index.php/PES/article/view/10</a>