If you use a source by a corporate organisation with no personal author then it is usually cited under the body that commissioned the work. This will apply to publications by associations, companies, government departments etc. such as Department of the Environment or Royal College of Nursing.
1st citation:

… major pioneering research in 2018 undertaken by the Royal College of Nursing (RCN) it has been shown to…

2nd citation:

Interestingly, the RCN (2007) has contested…