In 1981, the PMI Board of Directors authorized the development of what has become A Guide to the Project Management Body of Knowledge (PMBOK), standards and guidelines of practice that are widely used throughout the profession.
En 1981, os directores do PMI autorizaron o desenvolvemento do que se transformou nunha guía de proxectos o 'Project Management Body of Knowledge', contendo os padróns e as liñas mestras das prácticas que se usan extensamente na profesión.