APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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