Citation and Referencing
There are various reasons why do you need to include citations and referencing in your research project. The first being it is a requirement of the assessment criteria. An additional reason is that your bibliography is the recognition of all your research and hard work. It tells the reader where you got your information from and how you arrived at your conclusions.
WHAT DO THE IB GUIDELINES SAY?
The IB does not require you to use any particular style of referencing. It is expected that you acknowledge any material that is not yours. If in doubt cite it! In the written part of your extended essay you must tell the reader when you are using ideas or words, music or images that are not your own. Including them in the bibliography is not enough.
Courtesy : owl.english.purdue.edu, academictips.org, english-grammar-revolution, isu.edu,