1. ABRI, D. Al. – VALAEE, S. 2020. Diversified viral marketing: The power of sharing over multiple online social networks. In Knowledge-Based Systems [online], vol. 193, 2020 [cit. 2021-01-13]. ISSN 0950-7051. Retrieved from: http://www.sciencedirect.com/science/article/pii/S0950705119306574
2. CHASTON, I. 2012. Strategy for Sustainable Competitive Advantage: Surviving Declining De-mand and China‘s Global Development. New York : Routledge, 2012. 304 p. ISBN 978-04-155-2274-810.4324/9780203121122
3. DOHERTY, J. 2015. Online Marketing for Small Businesses in easy steps: Includes Social Network Marketing. Leamington Spa : In Easy Steps Limited, 2015. 264 p. ISBN 978-18-407-8628-6
4. EGAN, J. 2019. Marketing communications. Thousand Oaks : SAGE, 2015. 416 p. ISBN 978-14-462-5903-0
5. GUPTA, G. – MILLER, M. K. – DARDA, M. 2016. The key to successful online marketing for an orthodontic practice: Mastering the plan. In Seminars in orthodontics [online]. vol. 22, 2016, no. 4 [cit. 2021-01-13]. pp. 313–321. ISSN 1073-8746. Retrieved from: http://www.sciencedirect.com/science/article/pii/S107387461630054810.1053/j.sodo.2016.08.013