Cita APA (7a ed.)

Coolidge, S. (1986). What Katy did at school: Susan Coolidge. Ill. by Trevor Parkin. Macdonald Purnell.

Cita Chicago Style (17a ed.)

Coolidge, Susan. What Katy Did at School: Susan Coolidge. Ill. by Trevor Parkin. London: Macdonald Purnell, 1986.

Cita MLA (8a ed.)

Coolidge, Susan. What Katy Did at School: Susan Coolidge. Ill. by Trevor Parkin. Macdonald Purnell, 1986.