Abian, G. A. I., Golfo-Barcelona, M. G. P., & Lagrama, E. R., C. (2018). Preservation of the personal papers of Prof. Raul Rafael Ingles, 1929-2013. School of Library and Information Studies, University of the Philippines, Diliman.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Abian, Gianina Alexea I., Mary Grace P. Golfo-Barcelona, و Eimee Rhea Lagrama, C. Preservation of the Personal Papers of Prof. Raul Rafael Ingles, 1929-2013. Quezon City: School of Library and Information Studies, University of the Philippines, Diliman, 2018.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Abian, Gianina Alexea I., et al. Preservation of the Personal Papers of Prof. Raul Rafael Ingles, 1929-2013. School of Library and Information Studies, University of the Philippines, Diliman, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.