APA (7th ed.) Citation

Horse, H. (1993). The last polar bears. Puffin Books.

Chicago Style (17th ed.) Citation

Horse, Harry. The Last Polar Bears. London: Puffin Books, 1993.

MLA (9th ed.) Citation

Horse, Harry. The Last Polar Bears. Puffin Books, 1993.

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