Where does Bowling come From?

Author's Note: We wrote this in Language Arts to learn how to properly do a bibliography. 

It is unknown what year it was but a famous explorer, Finders Petrie, opened up a tomb and found “rocks” in the shape of what today are pins used in tenpin bowling. The game became so popular as royalty began to play it. The more it was played and the more popular it became, more adjustments were made to the rules and to the kind of materials they were using, boards became alleys and rocks became balls, but as it progressed into later years wood was then used and then actual “plastic” for the bowling balls. From all of this it is now a very popular game all over the world just from one guy opening up a tomb (History of Bowling ).