[Ryszard Helak duty ed., g. d. b. G. L., Helak, R., & Lewandowski, G. (1981). Protest! . pismo NSZZ "Solidarność", no. 19, 1981. NSZZ "Solidarność".
Chicago Style (17th ed.) Citation[Ryszard Helak duty ed., graphic design by Gerard Lewandowski], Ryszard Helak, and Geraed Lewandowski. Protest! . Pismo NSZZ "Solidarność", No. 19, 1981. NSZZ "Solidarność", 1981.
MLA (8th ed.) Citation[Ryszard Helak duty ed., graphic design by Gerard Lewandowski], et al. Protest! . Pismo NSZZ "Solidarność", No. 19, 1981. NSZZ "Solidarność", 1981.
Warning: These citations may not always be 100% accurate.