30 Years of TEFLIN Journal Supplementary Materials

<strong>Supplementary materials for 30 Years of TEFLIN Journals. </strong> The materials consist of Results of Bibliometric Analysis of TEFLIN Journal in the Four Aacademic Search Engines along with Abstract and Citation Databases (Publish or Perish software; Results of Bibliometric Analysis of TEFLIN Journal in Microsoft Academic (1990-2019) (Publlish or Perish software); Criteria of Bibliometric Analysis in VOSviewer (VOSviewer); Co-authorship Analyis of Authors (VOSviewer); Co-authorship Analyis of Organizations (VOSviewer); Co-occurence of Fields of Study (VOSviewer); Citations of Documents (VOSviewer); Citations of Authors (VOSviewer); Citations of Organizations (VOSviewer); Bibliographic Coupling of Documents (VOSviewer); Bibliographic Coupling of Authors (VOSviewer); Bibliographic Coupling of Organizations (VOSviewer). Two pieces of free software used in the bibliometric analyses are Publish or Perish (Harzing, 2007) and VOSviewer (Eck &amp; Waltman, 2020).