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.
Lua i Stíl Chicago (17ú heag.)Cayabyab, Mark James G., agus 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.
Lua MLA (9ú heag.)Cayabyab, Mark James G., agus 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.