Coba jelasin Catatan dari Sir William Congreve, Baronet ke-2 dong

James Earle "Commodore Squib: The Life, Times and Secretive Wars of England's First Rocket Man, Sir William Congreve, 1772–1828" (Cambridge Scholars Publishing, 2010), 270p., illus.

Frank H. Winter The First Golden Age of Rocketry (Washington and London: Smithsonian Institution Press, 1990), 322p., illus.