Holland, Barbara (October 1997). «Bang! Bang! You're Dead». Smithsonian magazine. The Smithsonian. p. 4. Archivado desde el original el 18 de diciembre de 2011. Consultado el 3 de junio de 2012. «Hair triggers fell into disrepute, but speed and accuracy continued to improve, particularly for shooting at greater distances. (In 1834 Alexander McClung, inveterate Southern duelist, set a new record by fatally shooting his man in the mouth with a percussion pistol at over a hundred feet.)».
Holland, Barbara (October 1997). «Bang! Bang! You're Dead». Smithsonian magazine. The Smithsonian. p. 4. Archivado desde el original el 18 de diciembre de 2011. Consultado el 3 de junio de 2012. «Hair triggers fell into disrepute, but speed and accuracy continued to improve, particularly for shooting at greater distances. (In 1834 Alexander McClung, inveterate Southern duelist, set a new record by fatally shooting his man in the mouth with a percussion pistol at over a hundred feet.)».