Cite Them Right is an online service designed to help you correctly reference a wide range of resources using Harvard and other referencing styles.
It is easy to use with the ability to enter and check your own referencing examples.
Advice is also given on avoiding plagiarism.
Your Department may use a specific referencing style, such as Brookes Harvard, MHRA or OSCOLA, and may also provides its own guidelines for using that style. You will need to check which style your Department uses. Detailed guidance can be found on the Library’s relevant Subject Help page