APA (7th ed.) Citation

Ahlberg allan & janet ahlberg. (1980). Mr biff the boxer (1st.). Penguin Group.

Chicago Style (17th ed.) Citation

Ahlberg allan and janet ahlberg. Mr Biff the Boxer. 1st. London: Penguin Group, 1980.

MLA (9th ed.) Citation

Ahlberg allan and janet ahlberg. Mr Biff the Boxer. 1st. Penguin Group, 1980.

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