Ibid.

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For the short story by H.P. Lovecraft, see Ibid (short story).

For Wikipedia references, please do not use "ibid" or similar shorthand. See this style guide for help citing a footnote more than once on Wikipedia.

Ibid. (Latin, short for ibidem, "the same place") is the term used to provide an endnote or footnote citation or reference for a source that was cited in the preceding endnote or footnote. It is similar in meaning to idem (meaning something that has been mentioned previously; the same^[1]) abbreviated "Id.," which is commonly used in legal citation. ^[2]

To find the ibid. source, one has to look at the reference right before it, and so ibid. serves a similar purpose to ditto marks (〃, ", do.).

1 Example
2 See also
3 Notes
4 External links

[edit] Example

4. E. Vijh, Latin for dummies (New York: Academic, 1997), 23.
5. Ibid.
6. Id. at 29.

The reference in no. 5 is the same as in no. 4 (E. Vijh, "Latin for dummies" on page 23), whereas the reference in no. 6 refers to the same work but at a different location, namely page 29.