[1] https://bettermarketing.pub/the-iceberg-principle-in-marketing-b04e9960b715 

[2] https://www.ama.org/the-definition-of-marketing-what-is-marketing/  

[3] Rodríguez Ardura, Inmaculada et al. (2008). Principios y estrategias de marketing. Editorial UOC. Barcelona.

[4] https://www.mheducation.es/blog/la-piramide-de-maslow 

[5] https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photo/10444222/image/6ea22f37cbdb3154e61a9860d8722d08  

[6] https://www.kimovil.com/es 

[7] https://www.comunicare.es/empresas-orientadas-al-marketing/ 

[8] https://www.ratacorneronline.com/cat/libro/harley-mania_3389 

[9] https://www.yatekomo.es/en-bolsa/ 

[10] https://nestoraltuve.com/2022/09/23/medios-digitales-propios-pagados-y-ganados/ 

[11] https://aprendamosmarketing.com/trucos-de-whatsapp/ 

[12] https://applesencia.com/2013/01/apple-tercer-fabricante-eeuu