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Citation styles for Diphenhydramine

APA style

Diphenhydramine. (2020, November 12). Practice Parameters, . Retrieved 20:40, January 14, 2026 from http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664.

MLA style

"Diphenhydramine." Practice Parameters, . 12 Nov 2020, 19:31 UTC. 14 Jan 2026, 20:40 <http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664>.

MHRA style

Practice Parameters contributors, 'Diphenhydramine', Practice Parameters, , 12 November 2020, 19:31 UTC, <http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664> [accessed 14 January 2026]

Chicago style

Practice Parameters contributors, "Diphenhydramine," Practice Parameters, , http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664 (accessed January 14, 2026).

CBE/CSE style

Practice Parameters contributors. Diphenhydramine [Internet]. Practice Parameters, ; 2020 Nov 12, 19:31 UTC [cited 2026 Jan 14]. Available from: http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664.

Bluebook style

Diphenhydramine, http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664 (last visited January 14, 2026).

BibTeX entry

 @misc{ wiki:xxx,
   author = "Practice Parameters",
   title = "Diphenhydramine --- Practice Parameters{,} ",
   year = "2020",
   url = "http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664",
   note = "[Online; accessed 14-January-2026]"
 }

When using the LaTeX package url (\usepackage{url} somewhere in the preamble) which tends to give much more nicely formatted web addresses, the following may be preferred:

 @misc{ wiki:xxx,
   author = "Practice Parameters",
   title = "Diphenhydramine --- Practice Parameters{,} ",
   year = "2020",
   url = "\url{http://mfrdinfo.com/ems1/index.php?title=Diphenhydramine&oldid=27664}",
   note = "[Online; accessed 14-January-2026]"
 }