Depending on the nature of your assignment you may need practical or scholarly information or both.
Practical information represents information which reflects what is actually happening in the business world. Newspapers, magazines, trade magazines, company websites, and press releases all represent sources of practical information. Many times practical items or articles do not use the term business ethics though they may recount an event or situation involving business ethics.
Scholarly or academic articles are usually written usually by a professor or scholar and have a methodology applied to the examination of a specific problem or observation. Most scholarly and academic articles will use the terms ethics or business ethics.
It is important to be able to distinguish a scholarly article from a practical article. Go through this tutorial to see how they differ.
Sample practical or trade article