There are many different sets of citation rules. Legal periodicals, including law reviews, often have their own internal citation rules. Publishers of case reporters and other legal materials typically have their own citation guidelines.
Some courts have special citation rules for appellate briefs and court opinions.
One thing to keep in mind is that The Bluebook was designed for law reviews, not for briefs or legal memoranda. The typefaces in most of the examples in the book are those that law reviews use, which are different from those used in typed legal memoranda. To see the difference, compare the examples on the inside front cover of The Bluebook with those on the inside back cover. In the memoranda that you write for this class, the only typefaces that you should use are ordinary type and underlined type . 56-61, and Table T.6, pp.