APA (7th ed.) Citation

RIDDELL. (2001). Platypus. Puffin Books.

Chicago Style (17th ed.) Citation

RIDDELL. Platypus. London: Puffin Books, 2001.

MLA (9th ed.) Citation

RIDDELL. Platypus. Puffin Books, 2001.

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