Lecturas obligatorias:
Ingram, D. (2015).
How Does a Political Trend Affect a Small Business?
Recuperado de
http://smallbusiness.chron.com/political-trend-affect-small-business-64909.html
Business Case Studies (2015).
Managing external influences
. Recuperado de
http://businesscasestudies.co.uk/first-group/managing-external-influences/social-and-technological-factors.html#axzz3a9dEXTXW
Lectura recomendada:
Nacional Financiera. (2015).
Otros factores externos
. Recuperado de
http://mexico.smetoolkit.org/mexico/es/content/es/3532/Otros-factores-externos