Consult The Bluebook (KF245 .U5 2020) Rule 20 (R20) and Table 2 (T2) T2.27, Mexico (as of the 21st ed., available exclusively online), for assistance with citing to Mexican law. Rule 20 provides the general guidelines for citing foreign law and T2.27 provides details specific to Mexican legal materials. The Bluebook provides guidance for citing Mexican cases, constitutions, codes, statutes and decrees, legislative materials, and electronic sources.