Following the referencing guidelines your university department specifies is important for your written assignments. Often a specific number of marks are available for correct and thorough referencing. ‘Name-date’ systems like the Harvard system, where short citations are included in brackets in the text, are becoming more popular than systems in which full references to sources are set out in notes at the bottom of each page (footnotes) or at the end of the piece of work (endnotes).
Whichever particular system you choose, BE CONSISTENT: you must maintain exactly the same style of citation throughout each piece of work. Similarly, the style used in the bibliography should mirror that employed in the references or notes. As well as acknowledging intellectual debt, this shows you are conscientious about the presentation of your work, and are keen to maintain the highest academic standards.
If you need help with your referencing why not contact me.