Young adult fiction or young adult literature (YA)[1] is fiction published for readers in their youth. The age range for young adult fiction is subjective with some sources claiming it ranges from ages 12-18,[2] while authors and readers of "young teen novels" often define it as written for those aged 15 to the early 20s.[3][4] The terms young adult novel, juvenile novel, teenage fiction, young adult book, etc., refer to the works in this category.[5]