P.S, Buvaneswari, and Swetha M.S. “Digital Marketing: An Empirical Examination on Awareness and Perception OnIntrusive Marketing Strategies”. International Journal of Engineering & Technology, vol. 7, no. 4.39, Dec. 2018, pp. 793-5, https://doi.org/10.14419/ijet.v7i4.39.26727.