Vallee, J., & Aubeck, C. (2010). Wonders in the sky: Unexplained aerial objects from antiquity to modern times and their impact on human culture, history, and beliefs (1st Jeremy P. Tarcher/Penguin ed.). Jeremy P. Tarcher/Penguin.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Vallee, Jacques, و Chris Aubeck. Wonders in the Sky: Unexplained Aerial Objects from Antiquity to Modern Times and Their Impact on Human Culture, History, and Beliefs. 1st Jeremy P. Tarcher/Penguin ed. New York, NY: Jeremy P. Tarcher/Penguin, 2010.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Vallee, Jacques, و Chris Aubeck. Wonders in the Sky: Unexplained Aerial Objects from Antiquity to Modern Times and Their Impact on Human Culture, History, and Beliefs. 1st Jeremy P. Tarcher/Penguin ed. Jeremy P. Tarcher/Penguin, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.