Zotero helps you collect, manage, and cite research sources. Zotero allows you to attach PDFs, notes and images to your citations, organize them into collections for different projects, and create bibliographies using Word or Open Office.
EndNote is a program that makes it possible to collect and organize references in a database and instantly create properly formatted bibliographies.
Your professor prefers the Chicago Manual of Style and your bibliography should be formatted according to Chicago Manual of Style, 17th edition. http://www.chicagomanualofstyle.org/home.html
Print Edition: REFDESK Z253 .U69
Using the work of another scholar without proper citation, whether that work is available in print or online, is plagiarism, a violation of the Emory Honor Code. It is extremely easy for professors to discover work plagiarized from web sources -- they know how to use Google at least as well as you do, and there are many online tools available specifically to help educators detect plagiarized work.