Put simply, referencing is a way for an author to show their reader where they got the information they used in a piece of work.
There are two things an author must do to properly reference in an assignment:
Note: reference style. Different places use different 'styles' of referencing. These styles are just a collection of rules about how to set-out referencing. For example, one style might say to put dates in brackets (2019), while another might say to use footnotes**.
Corpus Christi College (and this guide) uses the APA 6th style of referencing.
*Some sources, such as websites, will not have a page number. In this case, use a paragraph number by counting down from the beginning of the page, or an abbreviated heading in quotation marks.