Aside from developing analyses and arguments, it is fundamentally important that the cited authorities should be provided in law literature. With proper legal citations, the author of a legal writing can refer to resources precisely and readers can locate and find the reference systematically. The significance of citations and citation form is relative. An elaborate system of citation form will contribute to the substance of citations by abbreviating, standardizing and uniformizing the information of cited materials. The Bluebook is a well-established convention of the legal citation form. It is used at a majority of the U.S. law schools and the U.S. courts. This article introduces the rules of citation form according to the Bluebook and introspects the functions of legal citation, with a special focus on the pros and cons of the scrutinized citation form. Drawing the core standards of legal citation is a necessary step. While it may be a possible way to adopt the Bluebook, one of the essential tasks is to examine the difference between English resources in the U.S. and Chinese resources in Taiwan. To avoid confusion, a feasible guidance of citation form should be suggested based on the characteristics and peculiarities of law data in Taiwan.