George, M., R., T., W.(1988).Seapower in global politics, 1494 - 1993 / George Modelski, William R. Thompson .Hampshire:Macmillan Press.
Gaya MLA
Modelski, George., Thompson, William, R.."Seapower in global politics, 1494 - 1993 / George Modelski, William R. Thompson".Hampshire:Macmillan Press,1988.Textbook.