Cayabyab, M. J. G., & Dela Torre, N. N. (2006). User satisfaction in the use of available alternative formats among visually impaired users of Library for the Blind Division of the National Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Cayabyab, Mark James G., و Nathalie N. Dela Torre. User Satisfaction in the Use of Available Alternative Formats Among Visually Impaired Users of Library for the Blind Division of the National Library. Quezon City : Institute of Library and Information Science, University of the Philippines Diliman, 2006.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Cayabyab, Mark James G., و Nathalie N. Dela Torre. User Satisfaction in the Use of Available Alternative Formats Among Visually Impaired Users of Library for the Blind Division of the National Library. 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.