APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Berry, Fred, and W. John Kress. Heliconia: An Identification Guide. Washington u.a: Smithsonian Inst. Pr, 1991.

MLA (9th ed.) Citation

Berry, Fred, and W. John Kress. Heliconia: An Identification Guide. Smithsonian Inst. Pr, 1991.

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