There is another location with lots of foreign books at Kent Mall.
Arkadaş has an interesting selection of books in English, French, and other foreign languages. The English section is pretty large and the choice for kids is excellent.
You can also order online and receive your book at home. Visit their website to browse their selection. The prices are similar to the ones on Amazon.ca but the delivery is a lot faster! Also you can get a Fatura to claim the VAT.
Here’s a link to their translated website.
D&R also has some books in English. Their selection is not as wide, but you can order online as well.