One of the more difficult tasks in writing your thesis is keeping track of the formatting of your footnotes and bibliography entries. There are so many different styles with various rules for the multitude of sources we use, it is hard to keep track of it all. Fortunately, there are software platforms that help make this task easier for you. Some of the major platforms are Endnote, RefWorks, Zotero, Mendeley, and Citationsy. Each of these will work relatively seamlessly with your word-processor. The word processor MS Word also has a basic function built in.
The key advantage of such program is that they automatically keep track of the format of your footnotes, identify repeat citations and treat them accordingly where necessary, and automatically generate a final bibliography. Often you can download entries from websites such as electronic journal databases and Googlebooks. They can also output these entries in different citation styles, as required. The Sydney College of Divinity does not specify which style of citations and bibliography you should use, but it is important to be consistent throughout the thesis.
You can see some of the features of the five programs noted above at Scribendi.