Rogozik, J. K. (1999). Bernard Singer, the forgotten "Most popular jewish reporter of the inter-war years in Poland". Polin.
Citazione stile Chigago Style (17a edizione)Rogozik, Janina Katarzyna. "Bernard Singer, the Forgotten "Most Popular Jewish Reporter of the Inter-war Years in Poland"." Polin 1999.
Citatione MLA (8a ed.)Rogozik, Janina Katarzyna. "Bernard Singer, the Forgotten "Most Popular Jewish Reporter of the Inter-war Years in Poland"." Polin, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.