Mark A. Kishlansky，ed.， Sources of World History ，New York，Harper Collins，1995，pp. 298-302；http：//www.historyguide.org/europe/churchill.html. SjwXtWtcxZtco98QNonCOPOL3/4OycSy85LN2PAEs5UrVXSj6Mlm5ez36aZVpT8j
