Coolidge, S. (1986). What Katy did at school: Susan Coolidge. Ill. by Trevor Parkin. Macdonald Purnell.
Chicago-referens (17:e uppl.)Coolidge, Susan. What Katy Did at School: Susan Coolidge. Ill. by Trevor Parkin. London: Macdonald Purnell, 1986.
MLA-referens (8:e uppl.)Coolidge, Susan. What Katy Did at School: Susan Coolidge. Ill. by Trevor Parkin. Macdonald Purnell, 1986.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.