21st Edition | |
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1.4 | No longer requires a prescribed order of authorities within each signal, instead requires authorities to be organized in a logical manner. |
10.6.2 | New section addresses how to cite SCOTUS in chambers opinions. |
12.3.2 | Citing to the U.S. Code no longer requires a year. |
15.1(b) | More than two authors for a non-periodical resource--use all author names when particularly relevant. Use the first author and et al. for short form citations. |
18.2.2(c) | Date and time for updated online sources--use the date and time when the piece was updated, rather than when it was originally posted. |
18.2.2(d) | Use short URLs when possible but only if the URL makes it clear what the source is. (E.g., wapo.st, but not bit.ly.) |
18.6-18.7 | Provides direction for how to create a pinpoint citation to video and audio recordings. |
18.8 | New rule gives guidance for citing photographs and illustrations. |
20/T2 | Removes foreign jurisdictions citation guidance from the back of the Bluebook, in T2. The Bluebook directs the user to T2 online on the Bluebook's website. |
T13/T6 | Removes the separation in previous editions between T6 (abbreviations in institutional author and case names) and T13 (abbreviations in periodical titles). See chart (to the right) for a list of the new abbreviations. |
Word | Old Abbreviation | New Abbreviation |
Artificial Intelligence |
NONE | A.I. |
Comparative | Comp. | Compar. |
Employ[er, ment] |
Emp'[r, t] (T6) | Emp. |
Employ[ee, ment] | Emp. (T13) | Emp. |
Environment[al] | Envt'l | Env't |
Laboratory | NONE | Lab'y |
Nationality | Nat'lity | Nat'y |
Profession[al] | Prof'l (T6), Prof. (T13) | Pro. |
Psycholog[ical, ist, y] | Psychol. | Psych. |
Refin[ing, ement] | Ref. | Refin. |
Research | Res. | Rsch. |
Reserv[ation, e] | Res. | Rsrv. |
Sociolog[ical, y] | Soc. | Socio. |