TDBoK™ Guide, second edition
The TDBoK™ Guide: Talent Development Body of Knowledge serves as a definitive, ongoing, centralized source and reference guide for standards of talent development practice and the knowledge and skills required to develop others in the workplace. Developed by the Association for Talent Development, this comprehensive collection of TD concepts, definitions, methodologies, and examples sets the gold standard for the talent development profession.
Source: td.org