APA (7th ed.) Citation

BERRY & Kress. (1991). Heliconia: An identification guide. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

BERRY and Kress. Heliconia: An Identification Guide. Washington, USA: Smithsonian Institution Press, 1991.

MLA (9th ed.) Citation

BERRY and Kress. Heliconia: An Identification Guide. Smithsonian Institution Press, 1991.

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