Analysis of information sources in references of the Wikipedia article "1973 World Snooker Championship" in English language version.
the modern era, which began in 1969 when the World Championship became a knockout event.
in the modern era since 1969
the world championship ... took on the modern day look during the 1968–69 season
the modern era, which began in 1969 when the World Championship became a knockout event.
in the modern era since 1969
the world championship ... took on the modern day look during the 1968–69 season