You need to get a CFIA permit, which can be printed off from the net, and found here
http://www.inspection.gc.ca/english/...t_covere.shtml
Up until 2 years ago, you could not resell the turtle, or import for other people - and needed the permit to say that you could breed the turtles, in order to sell c.b offspring.
I have heard that this may have changed recently, I would suggest finding a phone number on the link I provided and asking your closest office - they give different answers on different days, in my experience.
I know of one recent case, where the permit only took a week to get.
If you are dealing with a species on the CITES list, you will need CITES paperwork as well.
Ryan