Não informado. (2003). Polish Journal of Natural Sciences. University of Warmia and Mazury in Olsztyn.
Chicago-referens (17:e uppl.)Não informado. Polish Journal of Natural Sciences. Olsztyn, Polonia: University of Warmia and Mazury in Olsztyn, 2003.
MLA-referens (8:e uppl.)Não informado. Polish Journal of Natural Sciences. University of Warmia and Mazury in Olsztyn, 2003.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.