It turns the details of a source into a correctly punctuated reference in five styles: APA 7th edition, MLA 9th edition, Chicago 18th edition in both its notes and bibliography and author-date forms, and Harvard as described in Cite Them Right (13th edition, 2025). It handles the three sources students cite most: books, journal articles and web pages.
For each source you get the reference-list entry (called the bibliography in Chicago and works cited in MLA), the parenthetical in-text citation, the narrative citation ("Kahneman (2011) argues…") and, for Chicago notes, the first full footnote and the shortened note used after it. Nothing is looked up online: you type what is printed on the work, and the tool applies the rules. Fields the chosen style needs but you left empty are listed as missing instead of being invented.
How the styles differ
The same journal article by four authors shows the differences well.
- APA 7: Duckworth, A. L., Peterson, C., Matthews, M. D., & Kelly, D. R. (2007). Grit: Perseverance and passion for long-term goals. Journal of Personality and Social Psychology, 92(6), 1087–1101. https://doi.org/10.1037/0022-3514.92.6.1087. In the text: (Duckworth et al., 2007).
- MLA 9: Duckworth, Angela L., et al. "Grit: Perseverance and Passion for Long-Term Goals." Journal of Personality and Social Psychology, vol. 92, no. 6, 2007, pp. 1087-101. In the text: (Duckworth et al. 1090).
- Chicago author-date: all four names in the reference list, the year straight after them, and (Duckworth et al. 2007, 1090) in the text.
- Harvard (Cite Them Right): Duckworth, A.L. et al. (2007) 'Grit…', Journal of Personality and Social Psychology, 92(6), pp. 1087–1101. Four or more authors become "et al." in the reference list too.
The et al. rules are where most marks are lost. APA lists up to 20 authors in the reference list and uses "et al." in the text from three authors. MLA uses "et al." from three authors everywhere. Chicago 18 lists up to six authors in the bibliography (seven or more: the first three and "et al.") and uses "et al." in notes and author-date citations from three. Cite Them Right uses "et al." from four.