Referencing is acknowledging the sources of information used in an assignment. It involves citing sources in the text and providing a full reference list. Citations provide brief details in the text to direct the reader to the full reference. The reference list at the end provides complete publication details for all sources cited. Referencing is important to avoid plagiarism, support points made, and allow readers to find the sources. The guide explains how to reference different source types like books, journal articles, websites and more using the Harvard style.