APA (7th ed.) Citation

Pietropaolo, J., & Pietropaolo, P. A. (1986). Carnivorous plants of the world. Timber Press.

Chicago Style (17th ed.) Citation

Pietropaolo, James, and Patricia Ann Pietropaolo. Carnivorous Plants of the World. Portland, Or.: Timber Press, 1986.

MLA (9th ed.) Citation

Pietropaolo, James, and Patricia Ann Pietropaolo. Carnivorous Plants of the World. Timber Press, 1986.