An Appraisal of On Line Customer Services (A Case Study of SBI). Journal of Commerce and Trade , "Meerut, India", v. 4, n. 1, p. 51–57, 2009. DOI: 10.26703/jct.v4i1.410. Disponível em: https://www.jctindia.org/index.php/jct/article/view/a09-aky. Acesso em: 18 may. 2025.