NCSC-TG-001 Ver. 2: A Guide to Understanding Audit in Trusted Systems 1 June 1988, Version 2. (Tan Book)
You can download it from the following link: https://packetstormsecurity.com/files/download/13992/NCSC-TG-001-2.html
Source: https://packetstormsecurity.com/files/13992/NCSC-TG-001-2.html.html