APA (7th ed.) Citation

Grissell, E. (2020). A history of zinnias: Flower for the ages. Purdue University Press.

Chicago Style (17th ed.) Citation

Grissell, Eric. A History of Zinnias: Flower for the Ages. West Lafayette, Indiana: Purdue University Press, 2020.

MLA (9th ed.) Citation

Grissell, Eric. A History of Zinnias: Flower for the Ages. Purdue University Press, 2020.