When referencing the first resource you will want to consult is the NCI Library Referencing Guide which includes explanations and examples of referencing using the 3 styles used in NCI, Harvard, APA and IEEE.
If you are still having trouble with Referencing then the Library Academic Support Centre offers guidance and support on referencing and other areas of academic writing. You can check the Library Academic Support Centre page for more resources and tips with referencing or to set up an appointment.