See this example properly formatted in the QUT Cite tool.
Standard in-text citation examples are in Getting started - In-text citation.
Creator of standard. Name of standard [Internet]. Place of publication: Publisher. Year [cited Year Month Day]. Available from: http://www.xxxx.xxx.xx
Optometry Board of Australia. Guidelines for use of scheduled medicines [Internet]. Australia: Optometry Board of Australia. 2014 [cited 2017 June 16]. Available from: http://www.optometryboard.gov.au/Policies-Codes-Guidelines.aspx
Use this format for standards that specify appropriate professional behaviour. For technical standards that set out the procedures and design of products, services and systems see Technical standard.