Laws of Duplicate Contract Bridge
Rules of contract bridge are standardized by the World Bridge Federation and published in the book Laws of Duplicate Contract Bridge. The last edition was issued in 1997 and consists of 93 laws (articles). All duplicate bridge sponsoring organizations on lower levels must apply these rules. A large portion of the laws, though, is devoted to dealing with various irregular situations, and as such it is mostly used by tournament directors (referees) as a reference book. These laws do not apply to rubber bridge, which has its own set of laws, the Laws of Contract Bridge, issued in 1993; the rules are broadly similar to those of duplicate bridge. In practice, simpler rules for dealing with irregularities than those set out in the lawbook are often applied by the players themselves or by house rules.
Follow this link for a complete list of the Laws of Contract Bridge: