Percy, L. E. S. C. (1930). Maritime trade in war: Lectures on the freedom of the seas. Published for the Institute of Politics by Yale University Press.
Lua i Stíl Chicago (17ú heag.)Percy, Lord Eustace Sutherland Campbell. Maritime Trade in War: Lectures on the Freedom of the Seas. New Haven: Published for the Institute of Politics by Yale University Press, 1930.
Lua MLA (9ú heag.)Percy, Lord Eustace Sutherland Campbell. Maritime Trade in War: Lectures on the Freedom of the Seas. Published for the Institute of Politics by Yale University Press, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.