Yes, UCT does subscribe to RefWorks.
Please click on the following link to register for an account: https://refworks-proquest-com.ezproxy.uct.ac.za/
On this page you will notice that there is a small link saying "Create account' and this is what you need to click if you are signing up for the first time. See attached screenshot.
Please also note that you have to sign up/create an account with your UCT email address.
For further referencing help visit the following page on our website: http://www.lib.uct.ac.za/lib/research/referencing