[1] Columbia Univ, Sch Profess Studies, New York, NY USA
[2] Guangdong Univ Finance & Econ, Sch Law, Guangzhou, Peoples R China
[3] Prince Sattam Bin Abdulaziz Univ, Coll Business Adm, Dept Management, Al Kharj, Saudi Arabia
[4] Natl Coll Business Adm & Econ NCBA&E, Dept Business Adm, Lahore, Pakistan
[5] Preston Univ, Dept Econ, Kohat, Pakistan