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