There are multiple referencing systems and styles used across the university so please check your module handbook or speak to your tutor to clarify which you should use. When you have identified the appropriate referencing system you should consistently follow it.
GCU's academic librarians have created guidance for Harvard referencing based on the current British Standard (BS ISO 690:2010). The Library webpages have comprehensive guidance and examples of widely used sources of digital and print information. The library also provides links and support for other referencing systems including OSCOLA and APA.