Proper citation is an essential aspect of scholarship. Citing properly allows your reader or audience to locate the materials you have used. Most importantly, citations give credit to the authors of quoted or consulted information.
For detailed instructions on how to cite within the text of your paper, please consult a style manual listed below.
BU Librarians often recommend RefWorks as the best tool to manage citations. Accounts are free for the BU community, and most importantly RefWorks can automatically create a bibliography in hundreds of styles.
Here are some easy web options and more on zotero.