1. ABELS, Eileen; JONES, Rebecca; LATHM, John; MAGNONI, Dee; MARSHALL, Joanne Gard. Competencies for information professionals of the 21st century. Revised ed. Alexandria, USA: Special Libraries Association, 2003, [accessed 7 March 2021] Access through Internet: .
2. 2. BENSON, Angela; LAWLER, Cormac; WHITWORTH, Andrew. Rules, roles and tools: Activity theory and the comparative study of e‐learning. British Journal of Educational Technology, 2008, vol. 39, no. 3, p. 456-467.
3. 3. BUTLER, Pierce. An introduction to library science. Chicago: University of Chicago Press, 1933. 201 p.
4. 4. CHERINET, Yared Mammo. Blended skills and future roles of librarians. Library Management, 2018, vol. 39, no, 1/2, p. 93-105.
5. 5. CHUPWA, Chalermsak. Naewthang Phattana Sakkayaphaph Khong ukhalakorn Khayngan Hongsamut Mahawitayarai Suanphumipak (PULINET) [A Guideline for the development of PULINET personnel potentials]. Mahasarakham: Academic Resources Center and Department of Library and information science, Mahasarakham University, 1998. 138 p.