Não informado. (2020). Lloyd's Ship Manager & Shipping News International. Lloyd's of London Press.
Chicago-viite (17. p.)Não informado. Lloyd's Ship Manager & Shipping News International. London: Lloyd's of London Press, 2020.
MLA-viite (8. p.)Não informado. Lloyd's Ship Manager & Shipping News International. Lloyd's of London Press, 2020.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.