Sánchez Illán, J. C., & Luena Lopez, C. (2021). The end of the era of the big newspaper publishers and the emergence of the new digital models. The restructuring of the business of information in Spain in the first two decades of the 21st century. Universidad Pedagógica y Tecnológica de Colombia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sánchez Illán, Juan Carlos, و César Luena Lopez. The End of the Era of the Big Newspaper Publishers and the Emergence of the New Digital Models. The Restructuring of the Business of Information in Spain in the First Two Decades of the 21st Century. Universidad Pedagógica y Tecnológica de Colombia, 2021.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Sánchez Illán, Juan Carlos, و César Luena Lopez. The End of the Era of the Big Newspaper Publishers and the Emergence of the New Digital Models. The Restructuring of the Business of Information in Spain in the First Two Decades of the 21st Century. Universidad Pedagógica y Tecnológica de Colombia, 2021.
