MSA Year Book
The Motorsport UK Year Book, commonly referred to as The Blue Book is an annually published and regularly revised set of rules for motorsport in the UK.
The following is a list of equivalent rule books around the world
The FIA has regulations for everything! The overarching rules are in the International Sporting Code, along with specific rules for many aspects of motorsport.
The Manual of Motorsport covers all forms of motorsport in ‘strallia. The National Competition Rules section is recognised as the main body of law.
Republic of Ireland
The equivilent in the Republic Of Ireland is known as the Green Book.
https://www.motorsportuk.org/News-Publications/Publications/Yearbook - The Blue Book.
https://www.fia.com/regulations - All the FIA Regulations!
https://www.cams.com.au/regulations/manual - CAMS Manual of Motorsport