APA Style

Burningham, John. (). Mr Gumpy's Outing . : .

Chicago Style

Burningham, John. Mr Gumpy's Outing. : , . Text.

MLA Style

Burningham, John. Mr Gumpy's Outing. : , . Text.

Turabian Style

Burningham, John. Mr Gumpy's Outing. : , . Print.