In 2017, Chicago Press published a new manual of style.
Some of the major changes include:
- The use of Digital Object Identifiers (DOI) for books, format and placement of (1.33, fig. 1.1)
- The use of ibid. is now discouraged in favor of shortened citations. (14.34)
- In Author-Date references for journal citations, when the date of publication includes month and day, the year may be repeated to avoid ambiguity. (15.14; 15.49, 15.50)
The Chicago Manual of Style by