APA (7th ed.) Citation

Roger Hargreaves. (1971). Mr.Happy. Egmont.

Chicago Style (17th ed.) Citation

Roger Hargreaves. Mr.Happy. London: Egmont, 1971.

MLA (9th ed.) Citation

Roger Hargreaves. Mr.Happy. Egmont, 1971.

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