Tucker 2005,第564頁. sfn error: no target: CITEREFTucker2005 (help) Italy Declares War on Germany. World History Project. [2016-06-17]. (原始内容存档于2021-10-28)
(原始内容存档于2012-06-20). Sharp., Wells, Anne. Historical dictionary of World War II : the war against Germany and Italy. ISBN 978-0-8108-7944-7. OCLC 868610765. Weinberg