The first step is to check with your lecturer whether they require you to produce a bibliography. It may be the case that footnotes are sufficient. A bibliography includes not only all the sources you have cited in your assignment (which is the role of footnotes) but also the sources you have consulted and relied upon whilst researching your assignment.
If you are required to include a bibliography, you must list all sources you used to complete your assignment alphabetically under the following headings. These headings are centered on the page and printed in italics:
A Articles / Books / Reports
References in your bibliography should be set out as in your footnotes with the following four exceptions: