Yasin, Iftikhar; Ahmad, Nawaz; Chaudhary, M. Aslam (2019-07-22). "Catechizing the Environmental-Impression of Urbanization, Financial Development, and Political Institutions: A Circumstance of Ecological Footprints in 110 Developed and Less-Developed Countries". Social Indicators Research (به انگلیسی). 147 (2): 621–649. doi:10.1007/s11205-019-02163-3. ISSN0303-8300.
Yasin, Iftikhar; Ahmad, Nawaz; Chaudhary, M. Aslam (2019-07-22). "Catechizing the Environmental-Impression of Urbanization, Financial Development, and Political Institutions: A Circumstance of Ecological Footprints in 110 Developed and Less-Developed Countries". Social Indicators Research (به انگلیسی). 147 (2): 621–649. doi:10.1007/s11205-019-02163-3. ISSN0303-8300.