Rychlik 2015, p. 92. Rychlik, Jan (December 2015). "Braća Radić i Hrvatska seljačka stranka" [The Brothers Antun and Stjepan Radić and the Croatian Peasant Party] (PDF). Zbornik Janković (in Croatian). 1 (1). Retrieved 6 February 2017.
Rychlik 2015, p. 91. Rychlik, Jan (December 2015). "Braća Radić i Hrvatska seljačka stranka" [The Brothers Antun and Stjepan Radić and the Croatian Peasant Party] (PDF). Zbornik Janković (in Croatian). 1 (1). Retrieved 6 February 2017.