"OK, adj., int.1, n.2, and adv." OED Online. Oxford University Press, December 2021. Web. 1 December 2021.

"OK, adj., int.1, n.2, and adv." OED Online, Oxford University Press, December 2021, www.oed.com/viewdictionaryentry/Entry/130925;jsessionid=93283A4BC7A429E60B5128A7E4014BE1. Accessed 1 December 2021.

"OK, adj., int.1, n.2, and adv.". OED Online. December 2021. Oxford University Press. https://www.oed.com/viewdictionaryentry/Entry/130925;jsessionid=93283A4BC7A429E60B5128A7E4014BE1 (accessed December 01, 2021).