APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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