APA (7th ed.) Citation

Ulmer, T., & MacDougal, J. M. (2004). Passiflora: Passionflowers of the world. Timber Press.

Chicago Style (17th ed.) Citation

Ulmer, Torsten, and John Mochrie MacDougal. Passiflora: Passionflowers of the World. Portland, Or.: Timber Press, 2004.

MLA (9th ed.) Citation

Ulmer, Torsten, and John Mochrie MacDougal. Passiflora: Passionflowers of the World. Timber Press, 2004.

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