The findings from a paper-based review of the joint participation of professors and librarians in the development of informational skills of university students are described in this paper. Likewise, the differences regarding how both of them recognize the concept of "informational competencies" are presented. For such research, a comprehensive review of the related literature was carried out and the retrieved documents published in relation to previously established topics, especially in Mexico and Latin America, were analyzed too. The literature highlights the collaboration professor-librarian and its impact in student's learning, nonetheless, one factor stands out in the results of the research, the papers published by faculty members reporting their experiences on the topic are minimum, librarians are the big contributors. This study is framed in a research carried out for obtaining a Ph.D. degree. [ABSTRACT FROM AUTHOR]