APA (7th ed.) Citation

Berry, F., & Kress, W. J. (1991). Heliconia: An identification guide. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Berry, Fred, and W. John Kress. Heliconia: An Identification Guide. Washington: Smithsonian Institution Press, 1991.

MLA (9th ed.) Citation

Berry, Fred, and W. John Kress. Heliconia: An Identification Guide. Smithsonian Institution Press, 1991.