De zaak
de zaak
http://www.dezaak.nl/
Dmsa nl
dmsa nl
http://www.dmsa.nl/
Nasp
The #1 resource for sales professionals. an association for career salespeople that offers a certification program and many other exclusive services.
http://www.nasp.com/
Sma nl
sma nl
http://www.de-sma.nl/
Sme int.
Smei is the worldwide professional community for sales and marketing professionals, providing career advancement, professional certification and knowledge sharing.
http://www.smei.org/