Institute, A. R. (2013). Angel Group deals across sectors from April 2011 - March 2012. Angel Resource Institute.
استشهاد بنمط شيكاغوInstitute, Angel Resource. Angel Group Deals Across Sectors From April 2011 - March 2012. Angel Resource Institute, 2013.
MLA استشهادInstitute, Angel Resource. Angel Group Deals Across Sectors From April 2011 - March 2012. Angel Resource Institute, 2013.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.