Out of all of the kinds of evidence, my students had the most difficulty with anecdotal evidence. Because anecdotal evidence can be a persuasive and powerful tool, I came up with this three-paragraph essay where the anecdotal evidence is the complete body of the essay.
I didn't have the students complete a Bibliography, but I did try to get them used to in-text citations. I didn't follow the completely correct format but found this was a good stepping stone from just using evidence in essays to essays with Bibliographies. (I had them use parenthesis after evidence with two things from the website.). During this process, we also discussed credibility of websites.
This approach still gives great instruction on how to create an introductory paragraph and a conclusion paragraph while at the same time showing students how powerful anecdotal evidence can be.
The best of this assignment was when the students presented. Time and again, students commented that they didn't realize they or their friends could write that well. If they had an image, I projected it on the board while they were speaking. Students were amazed at how well the images added to the information shared.