Choose the focus of the paragraph. Each paragraph should include one main point, to make it easier for the reader to follow and to ensure the overall paper flows in a logical manner. Since the overall purpose of a persuasive essay is to convince your readers to do something (whether to take an action, change their minds or perspective, or engage in further research), the focus on the paragraph should be an aspect of this argument. Clearly state this main point in the first sentence of the paragraph, known as the topic sentence.
Substantiate your idea with evidence from a credible source. The source (such as a book or academic journal article) used should be current, accurate and written by an expert in the field. The evidence should give your readers a reason, beyond your own understanding of the situation, to agree with you. You may use statistics or other facts as a logical appeal (logos), reference an expert in the field to reinforce your opinion (ethos), or appeal in a fair, rational way to your readers' emotions (pathos).
Accurately cite your evidence, using the appropriate documentation style. The citation should be noted in the paragraph and on the bibliography page. Persuasive essays often require the use of the American Psychological Association (APA) style, but a professor or publication may prefer that you follow the Modern Language Association (MLA) style or the Chicago Manual of Style.
End the paragraph with a sentence that transitions the reader to the next idea.