A good tip if you are going to use the same citation a few times in your assignment is to use acronyms. You must explain the acronym in full the first time you use it, followed by the acronym so it is clear to your lecturer what is stands for.
Example:
First citation:
The World Health Organization (WHO, 2022) states that...
OR
...(World Health Organization (WHO), 2022).
Subsequent citations:
WHO (2022) states that...
OR
...(WHO, 2022).
Reference list:
Use the full version of the acronym.
Example:
World Health Organization. (2022, October 1). Ageing and health. https://www.who.int/news-room/fact-sheets/detail/ageing-and-health