1. Dambrava, V. Ryšiųsuvisuomeneprocesobeikomunikacijos. Projektųvaldymas. Vadovėlis. Klaipėda, 2013.
2. Ehmke, C., Fulton, J., Lusk, J. Marketing’s Four P’s: First Steps for New Entrepreneurs. Department of Agricultural Economics. https://www.extension.purdue.edu/extmedia/ec/ec-730.pdf
3. Goi, Ch.L. A Review of Marketing Mix: 4Ps or More? International Journal of Marketing Studies. 2009, Vol.1, No. 1.
4. Gronholm, T. Marketing concepts in practice. Lahti university of applied sciences. Degree programme in International Business Bachelor’s thesis. 2012. http://www.theseus.fi/bitstream/handle/10024/51157/Gronholm_Taru.pdf;jsessionid=E6BD8C829A6A4F49A7D8D22B80D92DAC?sequence=1
5. Martin, M. Business, MarketingMarketing Mix. 2014.https://www.cleverism.com/place-four-ps-marketing-mix