J., H., P.(1991).Invincible generals : Gustavus Adolphus, Marlborough Frederick the great, George Washington, Wellington / Philip J. Haythornthwaite .Poole:Firebird Books.
Gaya MLA
Haythornwaite, Philip, J.."Invincible generals : Gustavus Adolphus, Marlborough Frederick the great, George Washington, Wellington / Philip J. Haythornthwaite".Poole:Firebird Books,1991.Textbook.