We will be using the fifth edition of They Say / I Say, by Gerald Graff and Cathy Birkenstein. I recommend purchasing a copy of this book — and this edition — to have as a reference, but I also know that it has been made available open source (free) by the Internet Archive, so you should feel free to read it there.
The latest edition of The Craft of Research, by Wayne C. Booth, et. al., is the fourth, which you can purchase if you'd like. However, the third edition, which we'll be using, is available through EBSCO, so please feel free to go online for this book since this is supplementary.