Paradina, K. P. T. (2005). The Use of fear appeals and the attitudes of audiences of varying age levels. College of Arts and Letters, University of the Philippines Diliman.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Paradina, Katrina Paulette T. The Use of Fear Appeals and the Attitudes of Audiences of Varying Age Levels. Quezon City: College of Arts and Letters, University of the Philippines Diliman, 2005.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Paradina, Katrina Paulette T. The Use of Fear Appeals and the Attitudes of Audiences of Varying Age Levels. College of Arts and Letters, University of the Philippines Diliman, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.