APA (7th ed.) Citation

Trelease, W., & Yuncker, T. G. (1950). The Piperaceae of northern South America. University of Illinois Press.

Chicago Style (17th ed.) Citation

Trelease, William, and T. G. Yuncker. The Piperaceae of Northern South America. Urbana: University of Illinois Press, 1950.

MLA (9th ed.) Citation

Trelease, William, and T. G. Yuncker. The Piperaceae of Northern South America. University of Illinois Press, 1950.