Polski Rejestr Statków. (1999). Zasady uznawania firm serwisowych =: Procedural requirements for service suppliers. PRS.
Citazione stile Chigago Style (17a edizione)Polski Rejestr Statków. Zasady Uznawania Firm Serwisowych =: Procedural Requirements for Service Suppliers. Gdańsk: PRS, 1999.
Citatione MLA (9a ed.)Polski Rejestr Statków. Zasady Uznawania Firm Serwisowych =: Procedural Requirements for Service Suppliers. PRS, 1999.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.