@misc{Polski_Rejestr_Statków_Rules,
 author={Polski Rejestr Statków},
 howpublished={online},
 publisher={Polski Rejestr Statków},
 language={eng},
 title={Rules for the classification and construction of sea-going yachts. Pt. 1, Classification regulations, July 2020},
 type={e-książka},
 keywords={jachty morskie, akty prawne},
}