APA (7th ed.) Citation

(2005). Who swallowed Harold?: And other poems about pets. Marshall Cavendish.

Chicago Style (17th ed.) Citation

Who Swallowed Harold?: And Other Poems About Pets. Tarrytown, NY: Marshall Cavendish, 2005.

MLA (9th ed.) Citation

Who Swallowed Harold?: And Other Poems About Pets. Marshall Cavendish, 2005.

Warning: These citations may not always be 100% accurate.