Poviña, Alfredo (1945)_Sociologa del folklore
Tuckman, Bruce W. (1965) Developmental Sequence in Small Groups Psychological Bulletin 63 384 399
Kolb, D (1984) Experiential Learning Experience as the Source of Learning and Development
Computer Biographies - A Biographical Research Perspective on Computer Usage and Attitudes Toward Informatics Maria Knobelsdorf