Cita APA

Higgins, W. E., & Alrich, P. Xylobium: A Central to South American genus.

Citación estilo Chicago

Higgins, Wesley E., y Peggy Alrich. Xylobium: A Central to South American Genus.

Cita MLA

Higgins, Wesley E., y Peggy Alrich. Xylobium: A Central to South American Genus.