APA (7th ed.) Citation

Heller, R. (2014). The reason for a flower: A book about flower, pollen and seeds. Puffin Books.

Chicago Style (17th ed.) Citation

Heller, Ruth. The Reason for a Flower: A Book About Flower, Pollen and Seeds. New York: Puffin Books, 2014.

MLA (9th ed.) Citation

Heller, Ruth. The Reason for a Flower: A Book About Flower, Pollen and Seeds. Puffin Books, 2014.