These sources can help you familiarize yourself with a subject, but are not considered appropriate, citeable sources for a college-level research paper.
"Create. Engage. Connect. When you are a marketing professional, your job is to create messages that move people to take an action; spend time listening and engaging with your customers.
Marketing is both an art and a science. Marketing is where the magic happens. It's the business discipline that connects ideas to the people that find value in them."