Libro "Comercio Exterior. Teoría y práctica". Alfonso J. Ballesteros Román (Universidad de Murcia)
Libro "Gestión Administrativa del Comercio Internacional". Juan Silva Chorén (Mc Graw Hill)
nolotiro.org is a website where you can give stuff for free or find free second hand stuff: furniture, chairs, bicycles, computers, laptops, tables, beds, clothe, toys, mobile phones and many other stuff you don't want or need, so other people can recycle it and give it a new life.