Before choosing a reference style, please consult with your lecturer on which style and variation thereof should be used.
All new knowledge is built on previous knowledge. In academic writing such as assignments, theses, research articles and reports it is standard practice to give an overview of the current knowledge about a topic and to provide evidence to support the points that you make. These ideas will form the foundation for your own arguments and will be integrated into your own work by:
The ability to relate one's own work to existing knowledge is a skill that needs to be mastered by every student. This is done by acknowledging all the sources of information in the text of your assignments and providing a list of these sources at the end in the form of a bibliography or reference list in the specific style that is prescribed by your faculty.
If this is not done correctly, it may give the impression that you are trying to pass off the work of another as your own and you may be accused of committing plagiarism which is a serious offence.