Cita APA

(1993). Leopold letter: A newsletter of The Leopold Center for Sustainable Agriculture. Ames, Iowa: The Center.

Citación estilo Chicago

Leopold Letter: A Newsletter of The Leopold Center for Sustainable Agriculture. Ames, Iowa: The Center, 1993.

Cita MLA

Leopold Letter: A Newsletter of The Leopold Center for Sustainable Agriculture. Ames, Iowa: The Center, 1993.

Precaución: Estas citas no son 100% exactas.