APA

Gentry A. H., Vasquez 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. Chicago, Illinois: The University of Chicago Press.

Chicago

Gentry Alwin H, Vasquez Rodolfo, . 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. Chicago, Illinois: The University of Chicago Press.

Harvard

Gentry A. H., Vasquez 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. Chicago, Illinois: The University of Chicago Press.

MLA

Gentry Alwin H, Vasquez Rodolfo, . 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, Illinois: The University of Chicago Press. 1996.