Coolidge, S. (1976). What Katy did next: Abridged / Susan Coolidge. Purnell.
Cita Chicago (17th ed.)Coolidge, Susan. What Katy Did Next: Abridged / Susan Coolidge. Bristol: Purnell, 1976.
Cita MLA (8th ed.)Coolidge, Susan. What Katy Did Next: Abridged / Susan Coolidge. Purnell, 1976.
Atenció: Aquestes cites poden no estar 100% correctes.