APA (7th ed.) Citation

Bruna, D. (1990). I know my shapes. William Collins.

Chicago Style (17th ed.) Citation

Bruna, Dick. I Know My Shapes. London: William Collins, 1990.

MLA (9th ed.) Citation

Bruna, Dick. I Know My Shapes. William Collins, 1990.

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