APA (7th ed.) Citation

Adamson, J., & Adamson, G. Topsy and Tim: Go on an aeroplane. Ladybird Books Ltd.

Chicago Style (17th ed.) Citation

Adamson, Jean, and Gareth Adamson. Topsy and Tim: Go on an Aeroplane. London: Ladybird Books Ltd.

MLA (9th ed.) Citation

Adamson, Jean, and Gareth Adamson. Topsy and Tim: Go on an Aeroplane. Ladybird Books Ltd.

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