APA:C.MAYILSAMY. (Volume-I, Issue-II -(Year-2017)). customer relationship in business management in telecommunication - with reference to BSNL. Retrieved from ISBN
Chicago:C.MAYILSAMY. "customer relationship in business management in telecommunication - with reference to BSNL" Example, Volume-I-issue-II-Year-2017-ISBN:987-81-92597-40-9. ISBN.
