Walder, T., & Blau, J. A. (2020). The unexpected spy: From the CIA to the FBI, my secret life taking down some of the world's most notorious terrorists (First edition.). St. Martin's Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Walder, Tracy, و Jessica Anya Blau. The Unexpected Spy: From the CIA to the FBI, My Secret Life Taking Down Some of the World's Most Notorious Terrorists. First edition. New York: St. Martin's Press, 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Walder, Tracy, و Jessica Anya Blau. The Unexpected Spy: From the CIA to the FBI, My Secret Life Taking Down Some of the World's Most Notorious Terrorists. First edition. St. Martin's Press, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.