Cita APA

Bell, A. D., & Bryan, A. (2008). Plant form: An illustrated guide to flowering plant morphology (New edition.). Portland: Timber Press.

Citación estilo Chicago

Bell, Adrian D., y Alan Bryan. Plant Form: An Illustrated Guide to Flowering Plant Morphology. New edition. Portland: Timber Press, 2008.

Cita MLA

Bell, Adrian D., y Alan Bryan. Plant Form: An Illustrated Guide to Flowering Plant Morphology. New edition. Portland: Timber Press, 2008.