Linking thoughts and connections in visual ways can help you move into deeper levels of thinking.
Creating diagrams and other visual representations encourages you to step away from the reading and to organize your information and ideas in novel and meaningful ways.
Visual representations help you juxtapose ideas and bring to light interesting connections that might be incorporated into a broader plan for the essay.
Not a visual learner? No need to worry, just like taking notes, how you link your ideas is up to you. But using graphics can be an excellent technique for some students.
A mix of books and journal articles will make up the majority of the sources you use for your paper. Knowing the difference between the two will help you understand the benefits of both.