Coolidge, S. (1976). What Katy did next: Abridged / Susan Coolidge. Purnell.
Chicago-Zitierstil (17. Ausg.)Coolidge, Susan. What Katy Did Next: Abridged / Susan Coolidge. Bristol: Purnell, 1976.
MLA-Zitierstil (8. Ausg.)Coolidge, Susan. What Katy Did Next: Abridged / Susan Coolidge. Purnell, 1976.
警告：這些引文格式不一定是100％准確.