Cách thức thuyết phục khách hàng

http://kynangsong.xitrum.net/congso/232.html
http://thanhvandl.wordpress.com/2011/08/19/hay-thuy%E1%BA%BFt-ph%E1%BB%A5c-khach-hang-ch%E1%BB%8Dn-b%E1%BA%A1n/
http://www.itmanvn.info/ky-nang-ban-hang/9-buoc-thuyet-phuc-khach-hang.html
http://www.kynang.edu.vn/ky-nang-ban-hang/415-5-cach-thuyet-phuc-khach-hang.html