Determine what kind of material you are citing from the website
When determining how to cite web sources, you need to first ask yourself what kind of material you are using. For example, is it a newspaper article, journal or magazine article, report or book chapter? If so, use the rules for citing those works, not the website itself.
It's not unusual to have missing elements such as authors, dates, etc.
Authors and dates may be missing or difficult to determine.
Governance. Peter Wall Institute for Advanced Studies, https://pwias.ubc.ca/about-us/governance. Accessed 11 Aug. 2021.
Parenthetical in-text citation: (Governance)
Narrative in-text citation: Governance
Cavanagh, Kathleen, and Kornya, Mathew. "Heart disease in cats." Canadian Veterinary Medical Association, 25 Apr. 2018, https://www.canadianveterinarians.net/documents/heart-disease-in-cats.
Parenthetical in-text citation: (Cavanagh and Kornya)
Narrative in-text citation: Cavanagh and Kornya
EXAMPLE - News site, online
Matassa-Fung, Darrian. "UBC Okanagan study finds dogs boost literacy in young students." Global News, 28 Nov. 2019, https://globalnews.ca/news/6230541/ubc-okanagan-study-dogs-boost-literacy-students/.
Parenthetical in-text citation: (Matassa-Fung)
Narrative in-text citation: Matassa-Fung