Ulrich's Directory, USA
Georgetown University Library, USA
Index Copernicus International, Poland
EBSCO Publishing, USA
E-International Scientific Research Journal Consortium, Philippines
Open J-Gate, India
Electronic Journals Library, University of Regensburg, Germany
The Ohio Library and Information Network, USA
New York University Libraries, USA 
Harold B. Lee Library, Brigham Young University, USA
University Washington Libraries, USA
The University of Hong Kong Libraries, Hong Kong
Cornell University Library, USA
Hammermill Library, USA 
American University of Armenia, Armenia 
Federal University of Technology, Nigeria 
Feng Chia University,Taiwan 
Vrije Universiteit Brussel,Belgium
Shanghai Jiao Tong University Library, China
McDermott Library, Unviversity of Texas, USA
Poding Memorial Library, Chaoyang University of Technology,Taiwan
CNKI Scholar, China
BASE (Bielefeld Academic Search Engine)
Indian Citation Indexing
Crossref DOI: 10.18843
Open Academic Journals Index (OAJI)(Russia)
SCOPUS (Under Review)