Triana, M. I. R. (2012). Estimation and analysis of expenditure and income of the floating population of undergraduate university student in the city of Tunja, Colombia. Universidad Pedagógica y Tecnológica de Colombia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Triana, María Isabel Rojas. Estimation and Analysis of Expenditure and Income of the Floating Population of Undergraduate University Student in the City of Tunja, Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2012.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Triana, María Isabel Rojas. Estimation and Analysis of Expenditure and Income of the Floating Population of Undergraduate University Student in the City of Tunja, Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.
