Dictionaries and Encyclopedias
Since entries in online dictionaries and encyclopedias can be updated regularly, include a retrieval statement with the date accessed before the URL for online sources without a DOI.
Entry in a Dictionary, Thesaurus, or Encyclopedia, with Group or Individual Author with DOI or URL
Formula
Author, A. (Year). Title of entry. In Title of dictionary or encyclopedia. DOI or Retrieval statement including the full URL
Example
Merriam-Webster. (n.d.). Plagiarize. In Merriam-Webster.com dictionary. Retrieved July 6, 2020, from https://www.merriam-webster.com/dictionary/plagiarize
Entry in a Dictionary, Thesaurus, or Encyclopedia Without a DOI, Accessed from Library Database or in Print
Formula
Author, A. (Year).Title of entry. In Title of dictionary (# ed.). Publisher.
Example
Radford, E., & Radford, M. A. (2007). Door. In Encyclopedia of superstitions. Philosophical Library.
Entry in a Dictionary, Thesaurus, or Encyclopedia With Author and Editor
Formula
Author, A. (Year). Title of Entry. In E. Editor (Ed.), Title of dictionary or encyclopedia. DOI or Retrieval statement including the full URL or Publisher
Example
Haber, E. (2013). Pitcher Plant. In J. M. Marsh et al. (Eds.), The Canadian Encyclopedia. Retrieved July 9, 2014, from http://www.thecanadianencyclopedia.com/en/article/pitcher-plant/
Wikipedia Entry
Formula
Title of entry. (Year). In Wikipedia. Retrieved Month day, year, from URL
Example
Confirmation bias. (2020). In Wikipedia. Retrieved June 26, 2020, from https://en.wikipedia.org/wiki/Confirmation_bias