Coolidge, S. (1986). What Katy did at school: Susan Coolidge. Ill. by Trevor Parkin. Macdonald Purnell.
Chicago-viite (17. p.)Coolidge, Susan. What Katy Did at School: Susan Coolidge. Ill. by Trevor Parkin. London: Macdonald Purnell, 1986.
MLA-viite (8. p.)Coolidge, Susan. What Katy Did at School: Susan Coolidge. Ill. by Trevor Parkin. Macdonald Purnell, 1986.
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