APA (7th ed.) Citation

Cella, C. (2020). How many ducks could fit in a bus?: Creative ways to look at volume. Pebble.

Chicago Style (17th ed.) Citation

Cella, Clara. How Many Ducks Could Fit in a Bus?: Creative Ways to Look at Volume. North Mankato, Minnesota: Pebble, 2020.

MLA (9th ed.) Citation

Cella, Clara. How Many Ducks Could Fit in a Bus?: Creative Ways to Look at Volume. Pebble, 2020.