Summarize: What are the main arguments? What is the point of this book or article? What topics are covered? If someone asked what this article/book is about, what would you say?
Assess: Is it a useful source? How does it compare with other sources in your bibliography? Is the information reliable? Is this source biased or objective? What is the goal of this source?
Reflect: Was this source helpful to you? How does it help you shape your argument? How can you use this source in your research project? Has it changed how you think about your topic?