APA (7th ed.) Citation

Hargreaves Roger. (1978). MR.Grumpy. Egmont UK lit.

Chicago Style (17th ed.) Citation

Hargreaves Roger. MR.Grumpy. London: Egmont UK lit, 1978.

MLA (9th ed.) Citation

Hargreaves Roger. MR.Grumpy. Egmont UK lit, 1978.

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