Write your essay. As you write your paper, use quotations from and summaries of your sources to support your argument. Be careful to keep these ideas in mind: To avoid plagiarism, make sure to cite your sources properly with in-text citations and a works cited page. Consult an online Style Guide if needed. When you are finished, reread your essay to check for all of the points above, and then proofread it to be sure your work doesn't contain errors in grammar or spelling.