APA Edition Citation

Ahlberg, J., & Ahlberg, A. (1982). The ha ha bonk book / Janet and Allan Ahlberg. Puffin.

Chicago Edition Citation

Ahlberg, Janet, and Allan Ahlberg. The Ha Ha Bonk Book / Janet and Allan Ahlberg. Harmondsworth: Puffin, 1982.

MLA Edition Citation

Ahlberg, Janet, and Allan Ahlberg. The Ha Ha Bonk Book / Janet and Allan Ahlberg. Puffin, 1982.

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