Blog posts follow the same format as journal articles. Italicise the name of the blog, the same as you would a journal title.
Example:
According to Ouellette (2019)...
OR
...(Ouellette, 2019).
Last name, Initial(s). (Year, Month Day). Title. Blog Name. URL
Example:
Ouellette, J. (2019, November 15). Physicists capture first footage of quantum knots unraveling in superfluid. Ars Technica. https://arstechnica.com/science/2019/11/study-you-can-tie-a-quantum-knot-in-a-superfluid-but-it-will-soon-untie-itself/