Even if you decide to paraphrase in your own words what the interviewee has said, you must still identify this person. Professor Tess compared the current political debate to a similar debate which took place over fifty years ago. I wondered what Susan would have done differently to avoid her horrible experience. She suggested that if she could relive that night, she would avoid talking to strangers. Periods and commas go inside the closing quotation mark.
Question marks go inside the closing quotation mark when the statement quoted is a question.
Question marks go outside the closing quotation when the sentence which contains the quote is a question. Question marks go inside the closing quotation mark when the statement quoted and the entire sentence are both questions. Go through your own essay and make sure that you have supplied the name of each person you have quoted. Look at the direct quotes in your essay. If not, go through and make corrections.