Referencing styles provide consistent rules for citing sources in-text and in reference lists. There are many different styles that vary by discipline. Students must use the style required for their subject area. Consistency within a piece of writing is important, so different styles should not be mixed. To determine the appropriate style, students should check assignment instructions, ask their lecturer, consult faculty guides, and look at samples from their department. If still unsure, students can consult library staff, style manuals, or online resources for clarification.