APA (7th ed.) Citation

Angie Sage. (2003). The Lonely Puppy. Puffin Books.

Chicago Style (17th ed.) Citation

Angie Sage. The Lonely Puppy. England: Puffin Books, 2003.

MLA (9th ed.) Citation

Angie Sage. The Lonely Puppy. Puffin Books, 2003.

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