List your references according to APA guidelines in the space below. You are required to use at least one outside source to support your viewpoint, and this source can be the textbook.
To quote one of our very good math and science tutors: “You will find here at Jiskha that long series of questions, posted with no evidence of effort or thought by the person posting, will not be answered. We will gladly respond to your future questions in which your thoughts are included.”
http://owl.english.purdue.edu/owl/resource/560/01/