Arnold, N. (2002). Horrible Science: The Terrible Truth About Time. Scholastic Children's Book.
Chicago-referens (17:e uppl.)Arnold, Nick. Horrible Science: The Terrible Truth About Time. London: Scholastic Children's Book, 2002.
MLA-referens (9:e uppl.)Arnold, Nick. Horrible Science: The Terrible Truth About Time. Scholastic Children's Book, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.