When creating your notes, you should provide a complete citation the first time you use a source, and use a shortened form for subsequent notes. This only applies to footnotes or endnotes - in the bibliography you will create one citation for each source you used. Below are a few examples. You can find other examples for short form under the header "Subsequent Note" on the source pages on this guide.
Ibid. is an abbreviation for ibidem, meaning "in the same place." Use Ibid. as shortened form when you have cited a source in the preceding note. Don't forget the period at the end.
1. Doug Fine, Farewell My Subaru: An Epic Adventure in Social Living (Villard, 2008), 45.
2. Ibid.
3. Ibid., 36.
Pay attention to the punctuation! Since Ibid. is an abbreviation, it needs both a period and a comma before the page number.
1. Doug Fine, Farewell My Subaru: An Epic Adventure in Social Living (Villard, 2008), 45.
2. Ibid.
6. Fine, Farewell My Subaru, 46.
1. "Barack Obama on Budget & Economy," September 4, 2011, On the Issues, http://www.issues2000.org
4. "Barack Obama on Budget & Economy."