This brief, inexpensive, and easy-to-use how-to manual has helped thousands of students in psychology and related fields with the task of writing term papers and reports. This bestseller includes a wealth of information and has been updated to reflect the latest APA Style Manual.
I thought it did a pretty good job and was approachable. I read it in preparation for teaching a class in writing in psychology. In the end, we ended up doing our own text: "Writing in Psychology: A Guidebook." I naturally consider that one to be better than this, but it's not a bad book for sure.