Estigoy, C. J., Sison, J. C., & Yang, J. V. (1999). Reading habits, interests and information needs of users of the Palayan City Public Library and Information Center with implications for strengthening its information services.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Estigoy, Consuelo J., Josephine C. Sison, و Jackson V. Yang. Reading Habits, Interests and Information Needs of Users of the Palayan City Public Library and Information Center with Implications for Strengthening Its Information Services. Quezon City : Institute of Library Science, University of the Philippines Diliman, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Estigoy, Consuelo J., et al. Reading Habits, Interests and Information Needs of Users of the Palayan City Public Library and Information Center with Implications for Strengthening Its Information Services. 1999.