You'll be using a specific style of citation, Havard Business School Style, for this class. It's always a good idea to keep track of your source information as you go. No matter what citation style you're using there are similar parts arranged in slightly different configurations.
For any source you find make sure you know:
Book
Author Last, First. Title of the Book with Capitalized First Letters. Publication City, State: Publisher, Date of publication.
Periodicals
Author Last, First. "Title of The Article." Title of the Journal or Paper volume (Date): Page numbers.