APA (7th ed.) Citation

Allan, T. (1980). Willie the squowse / (by) Ted Allan ; illustrated by Quentin Blake. Puffin Books.

Chicago Style (17th ed.) Citation

Allan, Ted. Willie the Squowse / (by) Ted Allan ; Illustrated by Quentin Blake. Harmondsworth (etc.): Puffin Books, 1980.

MLA (9th ed.) Citation

Allan, Ted. Willie the Squowse / (by) Ted Allan ; Illustrated by Quentin Blake. Puffin Books, 1980.

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