I want to cite a document from this years WHO World Health Assembly. The document in question can be found by clicking on "Main Documents" on their page and then selecting the document with the title A71/21 (Improving access to assistive technology).
I like to use IEEE referencing, so I would do it like this:
World Health Organization (WHO). 2018. Improving access to assistive technology (A71/21). Seventy-first World Health Assembly, World Health Organization, Geneva. Available: http://apps.who.int/gb/ebwha/pdf_files/WHA71/A71_21-en.pdf. [Accessed: 03-Dec-2018]
Is this acceptable?