APA (7th ed.) Citation

Smith, L. B., & Downs, R. J. (1957). The Bromeliaceae of Columbia. Smithsonian Institution.

Chicago Style (17th ed.) Citation

Smith, Lyman B., and Robert Jack Downs. The Bromeliaceae of Columbia. Washington: Smithsonian Institution, 1957.

MLA (9th ed.) Citation

Smith, Lyman B., and Robert Jack Downs. The Bromeliaceae of Columbia. Smithsonian Institution, 1957.