APA Style

Hargreaves, Roger. (). Mr.Grumpy . : .

Chicago Style

Hargreaves, Roger. Mr.Grumpy. : , . Printed Book.

MLA Style

Hargreaves, Roger. Mr.Grumpy. : , . Printed Book.

Turabian Style

Hargreaves, Roger. Mr.Grumpy. : , . Printed Book.