APA
Judit Viorst, . (1973). My Mama says there aren't any zombies, ghosts, vapires, creatures, demons, monsters, fiends, goblins, or things. : Atheneum.
Chicago
Judit Viorst, . 1973. My Mama says there aren't any zombies, ghosts, vapires, creatures, demons, monsters, fiends, goblins, or things. : Atheneum.
Harvard
Judit Viorst, . (1973). My Mama says there aren't any zombies, ghosts, vapires, creatures, demons, monsters, fiends, goblins, or things. : Atheneum.
MLA
Judit Viorst, . My Mama says there aren't any zombies, ghosts, vapires, creatures, demons, monsters, fiends, goblins, or things. : Atheneum. 1973.