Liên quan OK OK Computer Okazaki Shinji Oklahoma Okinawa Ok Taec-yeon OK Boomer Oksana Fyodorova Okinawa (thành phố) OK Go
Tài liệu tham khảo WikiPedia: OK http://www.jstor.org/stable/453111 http://www.jstor.org/stable/453285 http://www.jstor.org/stable/453580 http://www.jstor.org/stable/453922 http://www.jstor.org/stable/454098 http://www.jstor.org/stable/454321 https://www.ahdictionary.com/word/search.html?q=OK
