I just ordered that book... I hope it wasn't wasted money!
I haven't found any canadian books on the subject but I do have family with real experience to consult if I need to.

I've found that with many of the books I've read the information isn't relevant to my area.

A lot of the specifics in that book doesn't work in the south either BUT,

The principles are the same anywhere because the vegetables will want the same storage conditions anywhere.

I can't just stow my squash in an unheated room or my attic here -- because I don't have any unheated rooms and because we get intermittent days of shirt-sleeve weather when the attic gets pretty warm even in January.

But I can store squash if I find a spot with the temperature and humidity conditions squash like -- even if its the crawlspace instead.

How you get the conditions right will vary by geography but as long as you get the conditions right it should work. :)