Ive had a look round and found some websites which might be useful to you.
This webistes is "Evaluating Qualitative and Quantitative Survey Approaches" so it focuses on a specific area but it might be able to help you find some important distinctions between the two which you can use in an evaluation.
This websites is called "Qualitative versus Quantitative". It once more shows you some of the distinctions between each category.
This website is called "Combining Qualitative and Quantitative Research" but it shows some evaluation of both approaches and how you can combine them so it might be handy.
If these websites aren't much help, try looking on google as I found quite a lot of info here.