Baltiņš, Viesturs, and Imants Zarembo. “SEO AND SEM BENEFITS IN DIGITAL MARKETING”. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 25 (April 23, 2021): 27–31. Accessed December 21, 2024. https://journals.ru.lv/index.php/HET/article/view/6775.