Blum, H. (2022). The spy who knew too much: An ex-CIA officer's quest through a legacy of betrayal (First edition.). Harper, an imprint of HarperCollinsPublishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Blum, Howard. The Spy Who Knew Too Much: An Ex-CIA Officer's Quest Through a Legacy of Betrayal. First edition. New York, NY: Harper, an imprint of HarperCollinsPublishers, 2022.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Blum, Howard. The Spy Who Knew Too Much: An Ex-CIA Officer's Quest Through a Legacy of Betrayal. First edition. Harper, an imprint of HarperCollinsPublishers, 2022.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.