: Editorial Porrúa is the primary publisher for multiple editions (ranging from 1993 to at least 2011).
Do not rely on a blurry, scanned PDF from 2008 circulating on a sketchy file-sharing forum. Visit the Portal de la Suprema Corte , check your university's digital lending program, or purchase the official eBook. The clarity of a legitimate, updated text is the difference between passing your constitutional law exam and failing it due to outdated jurisprudence.