Cita APA (7a ed.)

Gentry, A. H., & Vásquez, R. (1996). A field guide to the families and genera of woody plants of northwest South America (Colombia, Ecuador, Peru) with supplementary notes on herbaceous taxa. University of Chicago Press.

Cita Chicago Style (17a ed.)

Gentry, Alwyn H., y Rodolfo Vásquez. A Field Guide to the Families and Genera of Woody Plants of Northwest South America (Colombia, Ecuador, Peru) with Supplementary Notes on Herbaceous Taxa. Chicago [etc.]: University of Chicago Press, 1996.

Cita MLA (9a ed.)

Gentry, Alwyn H., y Rodolfo Vásquez. A Field Guide to the Families and Genera of Woody Plants of Northwest South America (Colombia, Ecuador, Peru) with Supplementary Notes on Herbaceous Taxa. University of Chicago Press, 1996.