APA (7th ed.) Citation

Ahlberg, A., & Ahlberg, J. (1980). Mr Biff the boxer / by Allan Ahlberg ; with pictures by Janet Ahlberg. Puffin Books.

Chicago Style (17th ed.) Citation

Ahlberg, Allan, and Janet Ahlberg. Mr Biff the Boxer / by Allan Ahlberg ; with Pictures by Janet Ahlberg. Harmondsworth: Puffin Books, 1980.

MLA (9th ed.) Citation

Ahlberg, Allan, and Janet Ahlberg. Mr Biff the Boxer / by Allan Ahlberg ; with Pictures by Janet Ahlberg. Puffin Books, 1980.

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