Directory of Open Access Journals (DOAJ)
Strike Plagiarism
University of Szczecin (Poland)
Academy of Economic Studies in Bucharest (Romania)
Széchenyi István University (Hungary)
Society for Scholarly Publishing (SSP)
CrossRef
Syed Nisar Ahmed, Awaisur Rehman, Muhammad Amjad
DOI: dx.doi.org/10.14254/2071-8330.2013/6-1/8