See this example properly formatted in the QUT Cite tool.
Standard in-text citation examples are in Getting started - In-text citation.
Author AA. Title of Material. Learning materials for: Unit code; date uploaded. Accessed Month dd, year. URL
If a specific upload date is not apparent, omit that element.
You may adapt the description to fit the item cited, such as in the above example where 'Lecture slides' is used instead of 'Learning materials'.