Cita APA

Powell, M. H., & Westley, S. B. (1993). Erythrina, production and use: A field manual. Paia, Hawaii: Nitrogen Fixing Tree Association.

Citación estilo Chicago

Powell, Mark H., y Sidney B. Westley. Erythrina, Production and Use: A Field Manual. Paia, Hawaii: Nitrogen Fixing Tree Association, 1993.

Cita MLA

Powell, Mark H., y Sidney B. Westley. Erythrina, Production and Use: A Field Manual. Paia, Hawaii: Nitrogen Fixing Tree Association, 1993.