Use sources in addition to your textbook, and provide citations. For example, reference The Wall Street Journal, The New York Times, and other major news/business publications that contain articles about your chosen product or service. Please make use of other business books and sources that deal specifically with your product, industry or market segment. Additionally, www.census.gov is a great resource for demographic information.
Textbook:
Kotler, P. & Keller, K. (2015). Marketing Management. 15th Edition. New Jersey: Prentice Hall.
ISBN: 978-0133856460