National Hockey League
The National Hockey League (NHL) is a professional ice hockey league in North America formed in 1917. It began with four Canadian teams and later expanded to become the premier professional ice hockey league in the world, now featuring teams from both Canada and the United States.
sports
ice hockey
2014–2015 Official Rules of the NHL
National Hockey League Official Guide & Record Book 2016
2015–2016 Official Rules of the NHL
2013-14 Official Rules of the NHL
National Hockey League Official Guide & Record Book 2014
2012-2013 Official Rules of the NHL
NHL Official Guide & Record Book 2008–2009
Official Rules of the Nhl 99-00 (National Hockey Lague.//Schedule and Rule Book, 1999 2000)
The Official Rules of the Nhl 1997