Ms. Anukriti Agarwal, Dr. Naveen Nandal. “Digital Marketing: Paid Internet Advertising and Its Revenue Model”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 11, no. 2 (August 28, 2020): 720–725. Accessed May 8, 2024. https://turcomat.org/index.php/turkbilmat/article/view/9766.