@misc{Polski_Rejestr_Statków_Rules,
 author={Polski Rejestr Statków},
 howpublished={online},
 publisher={Polski Rejestr Statków},
 language={eng},
 type={e-książka},
 title={Rules for the classification and construction of sea-going ships. Pt. 1, Classification regulations, 2019 July},
 keywords={statki morskie, prawo morskie},
}