Page URL:
https://www.etymonline.com/word/O.D.
HTML Link:
<a href="https://www.etymonline.com/word/O.D.">Etymology of O.D. by etymonline</a>
APA style:
Harper, D. (n.d.). Etymology of O.D.. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/O.D.
Chicago style:
Harper Douglas, “Etymology of O.D.,” Online Etymology Dictionary, accessed $(datetime), https://www.etymonline.com/word/O.D..
MLA style:
Harper, Douglas. “Etymology of O.D..” Online Etymology Dictionary, https://www.etymonline.com/word/O.D.. Accessed $(datetimeMla).
IEEE style:
D. Harper. “Etymology of O.D..” Online Etymology Dictionary. https://www.etymonline.com/word/O.D. (accessed $(datetime)).