Which citation style does NOT include the year in any of their in-text citations

The citation style that does not include the year in any of its in-text citations is the Footnote or Endnote style, often associated with the Chicago Manual of Style (CMS). In this style, references are provided in footnotes or endnotes rather than directly within the text. Each citation is typically denoted by a superscript number, and the detailed source information, including the year of publication, is included in the corresponding footnote or endnote at the bottom of the page or at the end of the document.

This method allows the author to present bibliographic information in a clean manner, without interrupting the flow of the text with parenthetical citations. Instead, readers can refer to the footnotes or endnotes for complete citation details.