Παραπομπή APA

Gwizdz, A. (1966). State system of the polish peoples republic. Polina publishing house.

Παραπομπή Chicago Style

Gwizdz, Andrzej. State System of the Polish Peoples Republic. Warsaw: Polina publishing house, 1966.

Παραπομπή MLA

Gwizdz, Andrzej. State System of the Polish Peoples Republic. Polina publishing house, 1966.