De Leon, F. S. (1985). Disparities in material facilities in public elementary schools in the division of Sulu and their effects in pupil learning.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)De Leon, Florentina S. Disparities in Material Facilities in Public Elementary Schools in the Division of Sulu and Their Effects in Pupil Learning. 1985.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)De Leon, Florentina S. Disparities in Material Facilities in Public Elementary Schools in the Division of Sulu and Their Effects in Pupil Learning. 1985.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.