Writing at university may involve researching the ideas of other people, which you can combine with your own ideas and conclusions. Learning to acknowledge other people through in-text citing or footnotes in addition to providing a reference list will help differentiate between their ideas and your own.
This is central to the idea of academic honesty in Western academic institutions.
So why reference?
Read the VU Academic Integrity and Preventing Plagiarism Policy for more details.
Example: Arnott, G. D. (2005). Working in aged care and disability services: An introduction. Croydon, VIC: Tertiary Press.
For books with multiple authors, edited books, E-books and chapters in books refer to the APA Referencing guide.
Example: Brill, J. B. (2011). Heal your heart with food: Eight foods that prevent a second heart attack. Better Nutrition, 73(2), 38-42.
Refer to the APA Referencing guide for examples of how to cite multiple authors and online journal articles.