Kemp, Ian (март 2007). „Lightweight Firepower”(PDF). Asianmilitaryreview.com - Asian Military Review. Архивирано из оригинала(PDF) 7. 7. 2011. г. Приступљено 18. 4. 2010.
In United States law, a Machine Gun is defined (in part) by The National Firearms Act of 1934, 26 U.S.C.§ 5845(b) as "... any weapon which shoots ... automatically more than one shot, without manual reloading, by a single function of the trigger."
Chambers, John W. (II) (2000). „San Juan Hill, Battle of”. The Oxford Companion to American Military History. HighBeam Research Inc. Архивирано из оригинала 26. 11. 2009. г. Приступљено 24. 11. 2009.
Kemp, Ian (март 2007). „Lightweight Firepower”(PDF). Asianmilitaryreview.com - Asian Military Review. Архивирано из оригинала(PDF) 7. 7. 2011. г. Приступљено 18. 4. 2010.
Chambers, John W. (II) (2000). „San Juan Hill, Battle of”. The Oxford Companion to American Military History. HighBeam Research Inc. Архивирано из оригинала 26. 11. 2009. г. Приступљено 24. 11. 2009.